How did it come to this?

How had things gone so awry?

How in Tartarus did she get into this situation?

Cadance knew full well it was her own darn fault, she had brought this upon herself. Seducing Celestia into giving her a foal, having an ongoing affair with her for almost a year, not telling her husband… She winced as guilt stabbed at her heart, but still, she fumed, pacing back and forth. Everything had been going so well, no one knew about Celestia and her, no one suspected what they did behind closed doors… until Flurry Heart had been born. Luna had taken one look at the little alicorn and she had understood, she knew who her real father was.

Thankfully the Lunar Princess had promised not to tell Shining Armor… but at a price: a foal of her own, as soon as Cadance was strong enough to carry another heir. The months had gone by in a blur, and the pink alicorn now waited for Luna to come collect her prize, trying to calm her nerves. Cadance didn’t even have the luxury of waiting in her own room, since the… activities she would be engaging in would probably leave a huge mess. She preferred having to clean up a guest room rather than her own bedroom; she would probably have to throw out the linen, or just burn the beds, heck incinerate the whole darn room if Luna was half as enthusiastic as Celestia.

Speaking of the alicorn, Cadance shot an annoyed look at the Solar Princess, Celestia calmly resting on one of the guest beds, a book held before her muzzle in her golden magic; a book titled Estrus cycles and you, a guide to easy pregnancies. Cadance snorted, shaking her head. With Celestia there was no need for books on fancy breeding techniques, one drop of her semen was potent enough to ensure any mare would carry her foals, even sterile females like Cadance, which had earned her the forgotten title of Fertility Goddess long, long ago. Her insatiable lust and hermaphrodite organ had been the stuff of legends, before the stories of her exploits had faded away, forgotten by time.

And as it now turned out, Luna was the same, though the Lunar princess had never been as open about her extra appendage as her sister was in olden times; Luna had remained in the shadows, as always, preferring to surround herself with a harem of loyal mares of the night, rather than sleep with every willing male and female like her sister. If Celestia was to be believed, the bat winged ponies originated from Luna’s herd, a result of a younger Lunar Princess’ magic and her desire to see her nights alive with activity. Every one of them descended from Luna… but then again, if the stories were to be believed, at least half of Equestria’s population descended from Celestia one way or another. Cadance wondered if the bat winged ponies knew of this; it would explain why they had flocked to Luna upon her return.

Cadance gulped as a little thought entered her mind; she really hoped Luna didn’t give her a bat-winged alicorn foal, that would really be hard to explain to her husband… She resumed her frantic pacing, almost running in circles at this point.

Celestia sighed, closing her book with a sharp *snap*. “Cadance, my dear, please. You have to calm down.”

“Yes… calm down, easy.” Cadance breathed, her eyes wide and her voice panicky. “Nothing’s wrong, everything is fine, our secret is safe, Shiny still loves me...” She fluffed her wings, a gulp traveling down her throat, her tail trashing behind her. “I really wish I could hug Flurry Heart right now. Oh I hope she’s ok…”

“Sunburst will look after her, do not worry.” Celestia smiled kindly; her horn flared to life, her golden magic gently tugging Cadance towards the bed. “He has cared for her before.” It was true, the nerdy unicorn had turned out to be a very competent Crystaller; really it was just a fancy term for what amounted to a royal nanny. “Flurry Heart will be fine.”

Cadance resisted the soft pull of Celestia’s magic for a few stubborn instants, then she sighed, dragging her hooves to the bed. “I know, I know.” She grumbled as she slipped on the covers, sliding next to Celestia. “But it’s the first time my little Flurry is staying outside of the castle, so far away from her mommy… What if I didn’t pack enough maternal milk for her? What if she loses her blankie? What if she cries for me and I’m not there?” Cadance started to hyperventilate, her body shaking. “What if Chrysalis comes back to get her revenge! What if she’s going there right now... Oh my gosh I have to go see my Flurry!”

Celestia sighed kindly, her large wing closing around Cadance to keep her still, snuggled against her side. “Cadance, my sweet, be at ease. We haven’t seen Chrysalis since the hive turned on her, I doubt she’s planning anything but nurse her wounds and stay out of our way for quite some time.” She nuzzled Cadance’s pouting cheeks, placing a little kiss on her jawline. “You are being paranoid.”

“Hmm, sure I am.” Cadance grumbled, unconsciously shifting to snuggle deeper into Celestia’s familiar warmth. “At least I’m not the one who sent a whole squadron of Solar Guards to surveil Sunburst’s house.”

Celestia froze, mid kiss, her lips on Cadance’s cheek. “… I do not know what you mean.”

“Oh please,” Cadance snickered, “did you think I wouldn’t notice all those little clouds circling over his home? You can even see their gold armor shinning in the sun.”

“Oh for pony sake.” Celestia sighed, rubbing her forehead tiredly. “I told them to be discreet.”

Cadance chuckled, giving her lover a playful jab in the ribs. The two remained happily snuggled together, quite content in their comfortable embrace. Cadance relaxed against her lover, reassured by Celestia’s presence… and the little kisses Celestia was placing on her neck wasn’t too bad either. Actually, the way her lips brushed against her pink coat was quite… exciting. Celestia nibbled on her nape, then resumed her trails of kisses, making her shudder.

“What are we doing…” Cadance whispered, coming to her senses after a while; she winced when the mingled scent of her own arousal and Celestia’s musk hit her senses. “Wait…” Celestia tried to go for her lips, but Cadance pushed her away; the white alicorn just resumed her pecks on her neck. “We should stop before Luna arrives…”

“We’re just hugging and kissing.” Celestia said innocently, her lips pulling on Cadance’s coat, leaving a few faint marks. “It is innocent enough...”

“No it’s not.” Cadance sighed, her form shivering pleasurably as Celestia covered her neck in hickeys. “You know I can feel you getting hard, right?”

Celestia shifted her hips, grinding her length against Cadance’s side, her limp cock slowly throbbing to life as it slipped from her sheath. After a few seconds of hesitation, Cadance’s hoof strayed towards Celestia’s growing stallionhood, the pink alicorn biting her lips as she took hold of it. She felt it jerk under her grasp, the soft flesh hardening with every pump of blood, Celestia’s heartbeat running wild. She pumped her hoof over the lengthy shaft, feeling it come to life. True to her twisted rules of fidelity she had refused to let Celestia have actual sex with her ever since that first time, only giving the Solar Princess relief with her hooves and magic… But at this instant she could feel the emptiness in her begging to be filled, and the hardening tool in her hoof seemed perfect for the task.

Cadance’s hoof reached the already flaring tip, the length almost to full mast; she traced the contour of Celestia’s cockhead, watching the first few drops of clear arousal drip from it, then she pumped her hoof back down. Celestia’s stallionhood was now rock hard, veins bulging on the girthy pole, ready for action. Cadance gulped, Celestia’s musk now saturating the room, her hoof traveling down the lengthy shaft all the way down. She unconsciously licked her lips as her hoof bumped against Celestia’s balls, the plump orbs already sloshing with thick seed; it wasn’t for nothing that Celestia had held the title of Fertility goddess.

Gingerly, she fondled one of Celestia’s massive testicles, hefting the weighty semen inside, feeling it churning to produce more. While her hoof massaged Celestia’s ballsack, Cadance’s wing slowly unfurled, before her soft feathers closed around the enormous stallionhood. Celestia’s breath hitched, her length jerking in the gentle grasp; Cadance had never used her wings with Celestia before, something she usually reserved for her husband, but she just couldn’t help herself. The delicate pink wing brushed all over Celestia’s length, making the alicorn hiss in pleasure, her soft feather-tips grazing all the right spots. Cadance’s horn flared to life, and her magic joined her hoof in gently kneading Celestia’s balls, her aura squeezing the fat orbs, making Celestia whimper in pleasure.

The expert wingjob and ball-fondling quickly made Celestia’s cock swell in arousal, precum leaking copiously from the tip. Cadance’s wing was now covered with the syrupy substance, her feathers damp and sticky, the soft brushing turning into wet stroking. It was when Cadance closed her feathers around the throbbing flared head that Celestia grunted, her stallionhood jerking mightily as a strong spurt of precum fired from her tip, making a mess inside the feathery grasp. Cadance tsked, opening her wing to look at the damage: the whole limb was covered in slimy precum, her feathers clumped together, her wing heavy with the stuff. She would be preening herself for hours to fix her wing! She gave Celestia an annoyed glance, her magic squeezing her balls a little harder, just enough to make Celestia wince. It might seem harsh, but Cadance knew she loved it; right on cue her length jerked again, but before Celestia could spew her precum all over her body Cadance twisted around, her neck bending towards the throbbing tip.

Cadance hummed as she took Celestia’s flare tip into her mouth, the burst of precum landing on her tongue, the taste making her moan out loud. She lapped at the leaking tip, her tongue slathering Celestia’s flare, and she was rewarded with another spurt, and another, the stallionhood leaking like a broken faucet. Cadance resumed her ball massage as she eagerly sucked on Celestia’s cock, bulges traveling down her throat as she swallowed the abundant alicorn syrup, almost as thick as a normal stallion’s release; even her Shiny couldn’t compare to Celestia’s production.

The sounds of enthusiastic suckling echoed around the room, Cadance blowing her lover like her life depended on it. Celestia whimpered in need, her hips humping into Cadance’s muzzle to shove her cock deeper into her mouth, but Cadance simply bobbed her head back, keeping it against her tongue; she wanted to savor it all. Cadance licked and sucked, her lips closed tightly around Celestia’s shaft, her tongue coiling around the massive stallionhood. She was far from inexperienced, and she could already feel the flare bulging out, pushing against her jaw.

Cadance started to bob her head faster, large amounts of precum flowing into her mouth, the Love Princess eagerly gulped it all down. She felt Celestia’s cock throbbing between her lips as she teased her tip, her tongue lapping at the source of all that sweet stallion nectar. Her magic squeezed Celestia’s balls playfully, coaxing them into releasing their loads, hungry for Celestia’s thick cream. Her mane fell on her eyes as she quickly jerked her head up and down, the slurping sounds becoming frantic and messy. With a loud whinny of pleasure Celestia threw her head back, her spine arching on the bed, and that was all the warning Cadance got.

A powerful burst of seed traveled down Celestia’s shaft like an arrow, before exploding into Cadance’s mouth, her eyes widening as the virile taste of stallion cum overwhelmed her senses. Cadance moaned in bliss, savoring her mouthful, but she had to quickly swallow the delicious thick sludge as Celestia’s cock spurted more and more into her mouth, her cheeks already bulging out. Thankfully by now Cadance was adept at handling Celestia’s ridiculously large loads, bulges clearly visible on her slender neck as she swallowed every drop, the viscous semen clinging to her throat as it went down.

She swallowed and swallowed, the loud sound of her obscene gulping spurring Celestia on, her balls pulsing in Cadance’s magic. The Solar Princess panted like a dog as she slowly reached her limit, laying defeated on her back, Cadance keeping her downed with an imperious hoof on her chest. Cadance slurped down one last burst of gooey spunk, her lips tugging on Celestia’s shaft insistently, making sure she had milked the alicorn dry; Celestia could only whimper in post orgasmic stupor, her spent balls screaming for mercy as Cadance kept on kneading them. With a little flourish and a loud *slurp*, Cadance threw her head back, the softening stallionhood popping free from her mouth, covered in saliva.

Cadance watched Celestia try to regain her breath beneath her, the alicorn’s chest heaving under her pink hoof; she felt a burst of pride for a job well done. Smirking victoriously, Cadance leaned towards the flagging shaft, pressing her lips to Celestia’s tip in a lewd little kiss. Celestia gave a high pitch moan, and Cadance barely had time to blink before she was blasted in the face by a quick jet of alicorn spunk, the princess squealing as the stuff sprayed on her muzzle, clinging to her fur, to her mane, her eyes… It was everywhere.

Cadance pushed the limp stallionhood away, not eager to be covered in anymore of Celestia’s orgasmic aftershocks, and she gave a cum covered glare at her lover; Celestia smiled back, her eyes twinkling with mischief.

“Gotcha…” Celestia breathed, her golden magic pushing a gooey strand of mane out of Cadance’s eyes. She leaned forward, and this time Cadance didn’t push her away, accepting her quick kiss with a begrudging grumble; Celestia drew back with her own cum dribbling over her lips, her tongue darting out to sample her own production. “You do look beautiful covered in my semen, my dear.”

“Har, har.” Cadance rubbed her eyes, trying to get the gunk out of her eyelashes. “Do you have any idea how long it takes me to get this stuff out of my mane?”

“Not really.” Celestia tilted her head, watching Cadance carefully. “This is the moment when you usually show me the door.” Celestia took Cadance’s hoof, gently squeezing it. “You never let me stay with you after we are done. We never even cuddle after we make love, expect for that one time...”

“Cuddling is for my Shiny.” Cadance said firmly, fixing Celestia with a hard stare; she didn’t try to yank her hoof back however. “We aren’t making love. I’m just milking you so you don’t go crazy with desire, I’m doing what I have to keep you from blowing our cover, to protect my marriage, that’s all.”

Celestia sighed with a lopsided smile, fixing Cadance with her best disappointed maternal look. “Stubborn as always. Ever since you were a little filly you’ve been the same. Doing anything to get what you want, then running to me when your little plans inevitably backfire, hiding from the consequences.” Celestia snorted in humor, giving Cadance’s hoof a soft squeeze. “Too bad this time I was the consequence, hmm?”

“… If you want me to throw you out of the room I still can, you know.”

“I would rather stay, if you don’t mind.” Celestia chuckled as Cadance pouted childishly, her cum glazed cheeks puffed out. The old alicorn watched her seed slowly drip down from Cadance’s chin, a quiver running down her spine. “I wonder…” She gave Cadance a sidelong glance. “What if for once, you let me pleasure you?”

Cadance chewed on her lips, still unsure of where her feelings stood when it came to Celestia, but she didn’t say anything as the older alicorn started to lean towards her. She shuddered when Celestia’s lips grazed against her throat, just barely kissing her pink coat, before placing another soft peck on her nape, Celestia carefully crawling around Cadance’s body. The Solar Princess kept on giving her lover soft little kisses, her lips slowly traveling down her neck, then her back, and finally her rear. Cadance shuddered when Celestia kissed her cutie mark, the trails of pecks continuing towards her backside; blushing terribly, Cadance hid her face in her hooves as she tucked her tail to the side, giving Celestia a perfect view of her aroused pussy.

Celestia took a moment to admire Cadance’s tight slit, female arousal dripping from her folds, her pussy lips just a shade darker than her fur. From this close she could easily smell how excited Cadance really was, even if the silly filly always tried to deny it. Her sense of fidelity to her husband truly was a strange thing; willing to mate with another to give her husband a foal, and still arguing she didn’t want to cheat on him. Celestia inhaled deeply, her limp cock stirring in her lap: if Cadance was in heat she would have gone rock hard with just a whiff, but her natural scent had its own charm.

Licking her lips, Celestia leaned closer, her breath washing over Cadance’s oozing slit, making her shudder. Her pink folds trembled, her inner flesh making a brief appearance, her juices now flowing freely. Celestia smiled, then dove in.

Cadance bit her lips to avoid squealing like a little filly, a bolt of pleasure racing along her spine as Celestia gave a slow lick along her slit. From her appreciative hum Cadance could tell her lover had enjoyed the taste of her arousal, a treat Celestia had not earned very often; this type of thing really felt too intimate, it seemed like something she should keep just for Shining Armor… but today she could make an exception. She needed it, and Celestia was more than willing to provide.

The second lick was long and forceful, Celestia’s tongue parting her engorged folds, almost slipping inside. The old alicorn finished with a flourish, the tip of her tongue teasing Cadance’s hooded clit, coaxing it out, and Cadance whole body quivered in pleasure. On the third lick Celestia’s tongue teased her opening, probing her pussy, stopping just shy of going inside. Celestia then began to lap at her folds, collecting all her nectar with enthusiastically, her tongue flicking on her clitoral hood with every lick. Cadance whimpered, her teeth sinking into her hoof to keep herself quiet, not wanting to show just how much she was enjoying this, but her body had other plans. She felt the pressure building in her loins, and she could do nothing to stop her pussy from winking in a vulgar display of desire.

As soon as her pink folds opened, Celestia suddenly lunged forward, her long fat tongue plunging between Cadance’s engorged folds, slithering around her pussy walls. Cadance cried out loud, her wings shooting open and flanks quivering as she let all pretense fall; there was no way to hide just how much she was enjoying this. She winked again, her slit pulsing against Celestia’s lips, the alicorn sucking all her juices, gulping it down thirstily. Celestia’s tongue coiled around Cadance’s now exposed clit, the engorged love button sending bolts of raw pleasure all around her body, a ball of bliss building in her belly. Cadance moaned out loud, her walls clamping down on Celestia’s tongue, her pussy begging for something far more substantial to fill her.

After a few more minutes of intense slurping, Celestia threw her head back to take a deep breath, Cadance’s arousal dribbling all over her white muzzle. She watched the quivering pink folds winking at her, desperate for a cock, her own stallionhood standing at full mast against her belly. It would be easy to just mount the lust crazed princess and cram her breeding tool inside Cadance’s tight pussy, but this wasn’t about her own gratification; she was servicing Cadance right now. Celestia’s horn flared to life, her golden magic swirling over Cadance’s slit, pushing her holds open; Celestia could see all the way inside her oozing cunt, Cadance’s soft walls clenching down on nothing, desperate for anything to clamp down onto. Celestia concentrated, her magic forming a solid replica of a stallionhood, and on the next wink she plunged the magical dildo into Cadance’s pussy.

Instantly Cadance’s walls clenched down on the golden stallionhood, the princess giving a high pitched moan; the fake cock was far from being as large as Celestia’s own flesh, but it was still much bigger than the average stallion. Celestia smiled, enjoying the sounds of Cadance giving into pleasure, her ears perked as the princess panted and cursed, her cunt clamped tightly on her magic. The alicorn waited for the pressure to ease up a little, then she started to withdraw the magical dildo, making sure the fake flare dragged on the tight pussy walls just right; Cadance whimpered as the emptiness inside her returned, her cunt trying desperately to hold Celestia inside.

Celestia waited a few moments, teasing her lover as she kept her magical dildo poised just at her entrance, the tip only barely inside. She waited for Cadance to start begging for more, her voice strangled by pleasure and lust, and her horn shone even brighter. Celestia smirked, and she slammed the golden cock inside without restraint, all the while making it grow half as big again. Cadance’s eyes widened, her body tensing, her breath catching in her throat; the ball of pleasure in her belly suddenly burst, the cumulated bliss released like a spring, and with a strangled moan Cadance came.

Cadance’s juices burst around the golden dildo, spraying Celestia’s muzzle. The heady perfume drove the old alicorn mad with desire, but she kept a hold of herself, concentrating on her magical dildo; Cadance’s walls were clamping down so hard they almost managed to overpower the powerful alicorn’s magic. Eyes shining with lust, Celestia fought against the clenching walls, dragging the dildo back, the golden cock pulling with sudden lurches. She didn’t wait to get near the end of Cadance’s tunnel to plunge it back inside, making Cadance scream in pleasure as her orgasm soared. She repeated the process a second time, then a third, and before long the golden dildo was thrusting into Cadance in a blur, mare cum spraying everywhere.

Cadance was lost to the world at this point, her eyes rolled into the back of her head, her mouth open and tongue hanging out. Everything was bliss, she was lost in a sea of ecstasy, waves of pleasures battering her mind as the golden dildo slammed home again and again. Then everything went white, and Cadance collapsed in a heap, her ragged breath mingling with little orgasmic whimpers. Celestia plunged the fake stallionhood to the hilt one last time, then she let her magic dissipate, Cadance’s walls still clenching down on nothing.

Celestia had a look of pure lustful hunger on her muzzle as she watched Cadance panting before her, her stallionhood beating angrily against her belly, demanding attention. She knew she shouldn’t, she had promised Cadance, she had a deal with Luna… but she couldn’t help it. Snorting like a feral stallion, Celestia jumped off the bed, her massive cock bobbing under her. She then magically dragged Cadance to the edge of the covers, turning the half-unconscious mare on her belly.

Cadance’s eyes fluttered open just in time to feel her rear legs plopping down on the floor, then she squealed when a shadow fell over her; Celestia lost no time in mounting Cadance, her hooves on each side of her lover, her hips already humping as she aligned her cock.

“What are you doing?” Cadance hissed, trying to crawl away; a white hoof hooked around her shoulder, keeping her still. “I told you, no sex!”

“What about Shining Armor’s wish.” Celestia panted, pressing her muzzle into Cadance’s ear. “He asked for a lot of new foals… Isn’t this the whole point of sending our daughter and Shining Armor away for the weekend?”

“Oh… Yeah…” Cadance shuddered as she felt Celestia’s tip probing her slit, looking for her entrance “Wait wait wait, what about Luna!”

“She can have the next foal.” Celestia snorted angrily, her front legs clamping down around Cadance’s body possessively. “That is, if I ever let her...” Celestia nibbled on Cadance’s ear, inhaling deeply in her mane. “If I keep putting my semen in you… If I make sure I put my foal in your belly before her…” Celestia pressed her flare against Cadance’s pussy, precum already flowing from her tip. “I was the Goddess of Fertility, she was but the Succubus of Pleasure, her seed cannot hope to compete with mine...”

Cadance could only babble incoherently when faced with this much lust, this hunger for her body; it was both flattering and terrifying. She felt the massive flare pressing into her folds, Celestia’s hooves holding her possessively, her cock bending as she pushed against Cadance’s tightness. With a sudden lurch the girthy stallionhood finally popped between her tight pink lips, a deep moan echoing around the room; neither Celestia or Cadance could tell who had cried out, perhaps it was both, it was of little importance.

“Yeees…” Celestia’s eyes fluttered, a look of utter bliss on her muzzle. “After so long… After so much teasing…” Her hips jerked erratically, the alicorn unable to control her long-denied lust. “I can finally do THIS!” Celestia rammed her cock into her lover, her thighs slapping against Cadance’s rear as she savagely hilted into her mare.

Cadance cried out, both in pleasure and pain; it was a pleasurable kind of pain, the discomfort of being stretched to her limits, filled to the brim. Celestia was so big, her length pressed so deep, her pussy almost too small for the massive member. It had been more than a year since she had last allowed Celestia inside her, and she had forgotten just how much of a tight fit it had been. Celestia pressed her hips against her rear, enjoying the embrace of her snug cunt, her breath tickling Cadance’s ear. Cadance could feel Celestia’s flare crammed against her depths, a steady flow of precum seeping through barrier, the syrupy liquid already pooling into her womb.

“Mine…” Celestia whispered fiercely, hugging Cadance close. “You are mine…” Celestia’s hips quivered, ready to begin rutting her lover, ready to claim her once again. “My broodma…”

“And then ponies have the audacity to call us jealous and possessive.” A voice rang in the room, terrible and dark. “Hath thou no shame sister?”

Celestia and Cadance froze, their hearts stopping in unison. Dread filled the two lovers as a shadow started to spread on the wall facing them, darkness swirling like ink in water. The shadow quickly formed a doorway, black as the night, and from the gloom first appeared a pair of glowing eyes, the cyan pupils twinkling dangerously, then two sharp fangs glinted under them. In the next instant Luna stepped from the dark portal, a grimace of pure anger deforming her features; the enraged glare sent a bolt of terror into Celestia’s heart. The Lunar Princess slowly stepped closer to the bed, her eyes flicking from Cadance’s cum covered face, to Celestia’s dear-in-the-headlight expression.

“Celestia…” Luna’s voice rumbled like a storm, making the two mating alicorns whimper. “Once again you dare to take what is rightfully mine.” Luna’s mane billowed out, her coat slowly turning black; Celestia felt her heart stop at the sight, what had she done! The Lunar Princess slowly turning Nightmare stomped closer, making them cower in fear. “Thou will pay for this!”

Luna stopped just in front of them, her eyes narrowing dangerously, her mane darkening ominously, fangs glinting in the light. Celestia was frozen in shock, her mind completely blank; had she pushed her little sister down this path again? Luna’s horn shone, Cadance covering her face, the dark alicorn preparing to lunge at them… before an amused snort escaped her dark muzzle, a smile appearing on her lips.

Celestia blinked, her mouth falling open as Luna started to laugh, and it finally clicked. “LUNA!” Celestia exploded, pointing at her sister accusingly. “You scared me half to death! I told you to NEVER do this again, pretending to turn back is not okay!”

“Peace sister.” Luna chuckled, holding up her hoof in a soothing gesture; her mane and coat were quickly returning to normal. “Twas but a prank, as you love to say. And really, I do not think you are in the best position to complain about fairness.” She smiled cockily, looking at Celestia swelling like a bull-frog. She then gave a confused Cadance a glance, her smile revealing her fangs once more. “Do not worry young Cadance, we are not vexed by your actions. You can proceed with your debauched fornicating, we do not mind waiting our turn.”

That threw Celestia for a loop, the alicorn blinking in surprise. She had half expect Luna to try and throw her off her mate, or just lunge at them to stop her; Luna could be a little intense when it came to a competition between them. Celestia couldn’t understand why Luna was giving up her turn at claiming Cadance so easily, and she tensed slightly when Luna’s wings shot open, the dark alicorn leaping gracefully on the bed, landing in front of Cadance. Celestia shifted her hips, her cock grinding against Cadance’s depths, making sure she was firmly hilted in her mate, but Luna only leaned down, bringing her muzzle next to Cadance’s.

“By the moon…” Luna inhaled deeply, sniffing at Cadance’s cum covered face; the pink alicorn turned bright red. “Such potent odor, such virility.” Luna licked her lips, the sight making Celestia shift uncomfortably, not sure how she should feel about her own sister praising her seed; her cock had no such qualms, Cadance squeaking cutely as the sallionhood in her pussy somehow managed to grow even bigger. “Reminds me of the stink that emanated from your room when thou first discovered the joys of self-gratification.” Luna shot Celestia a heated glance, the two sisters locking eyes, one confident and strong, the other unsure and hesitant.

“That’s enough…” Celestia mumbled, wondering just how far Luna was willing to with her little prank; there was no way she was actually planning on staying while she rutted Cadance… was there? “If you think I will stop just because you are watching, you are sorely mistaken. I will keep going until I spill my essence into my mare, and there is nothing you can do to stop m…”

“Stop thee?” Luna’s eyes twinkled in amusement. “Oh, but I count on it sister.”

Luna smiled wide… then she leaned closer, her tongue slipping from her fanged mouth, only to place a long and sloppy lick across Cadance’s cheek, collecting a generous helping of incestuous semen. Luna hummed in appreciation, gulped it down, then went for seconds. Cadance whimpered, half aroused and half disgusted as Luna’s tongue brushed against her fur, cleaning it of Celestia’s spunk but leaving her coat sticky with saliva instead. Celestia watched her sister lick her thick semen quite eagerly, the dark alicorn clearly savoring each sample, the Solar Princess completely taken off guard once again. The spectacle was so depraved she didn’t realize she was thrusting her hips until she felt her thighs collide with Cadance’s rear, the pink princess opening her mouth to cry out… only for Luna to lock their lips together.

Cadance’s muffled moans quickly devolved into submissive squeals as Luna instantly took control of the kiss, her lips pressing against Cadance’s until the poor princess had to lean her head back, but still the dark alicorn followed. Celestia had to shuffle her front legs to the side as Cadance arched back, although she made sure she kept hilting into her pussy. She could see Luna’s tongue pressing against the inside of Cadance’s cheeks, her technique both skillful and savage at the same time; where Celestia kissed with love and kindness, Luna was aggressive and dominant, her dangerous fangs clashing against dull pony teeth, Cadance unable to compete with the stronger mare.

Cadance found herself pushed shoulder to shoulder with Celestia, her head pressed against her white neck, and Luna still kissed her with terrifying intensity, her tongue coiled around her own, her lips never leaving hers, stealing her breath away. The pink alicorn could not retreat anymore, and she was even pushed against Luna’s dominant form by Celestia’s incessant thrusts, the sounds of the massive stallionhood plunging into her wet cunt making her whimper.

Luna’s eyes flicked to the side and found Celestia’s; the two sisters held gazes, Luna’s tongue almost slipping down Cadance’s throat, Celestia ramming her cock into the tight pink pussy. Suddenly the dark alicorn unceremoniously let the kiss end, Cadance finally able to escape Luna’s lips; she ducked down, breathing desperately. This left Celestia and Luna staring at each other, their noses almost touching, Celestia’s panting breath washing over Luna’s face as the Solar Princess humped into her mate, almost distractedly. After a few moments Celestia couldn’t take the stare down anymore, and started to inch closer, her lips trembling as she leaned towards her sister, anticipation growing in her heart… only for Luna to smirk and turn away.

Celestia blushed red, realizing she had just tried to kiss her sister, but Luna didn’t pay any attention to her. The Lunar princess roughly grabbed Cadance’s head, and one none-too-gentle tug later she stepped over the pink mare, bringing Cadance’s muzzle close to her belly. Cadance could do nothing against Luna’s strength, her body rocked by Celestia’s thrusts; she was totally at the mercy of the two alicorns, something very new to the usually domineering mare. She found herself nose to nose with Luna’s sheath, the usually invisible organ now on full display, and she was there just in time to see Luna’s dark blue stallionhood start to emerge.

Luna’s cock slithered free from her sheath in front of Cadance’s nose, the princess’s eyes darting back and forth between the tip and the base, watching it grow longer, longer and longer still. Cadance gulped in dread as the limp cock surpassed Celestia’s length, and still it continued to grow. When Luna finally signed in contentment, her cock fully exposed, Cadance’s eyes were bulging out of their sockets; it was huge, much longer than Celestia’s! And then it started to grow hard, and Cadance wanted nothing more than to run away screaming. She might have, if Celestia wasn’t holding on to her hips, still hammering away with deep, slow thrusts that rocked her closer to Luna’s shaft.

Luna’s cock grew in jerks, blood pumping into the long organ at the rhythm of her heartbeat, every throb leaving it harder than before. And behind her shaft, Cadance could see a pair of massive navy testicles, as big as Celestia’s, maybe even bigger. Cadance whimpered, watching the blue cock rise, veins pulsing under the surface, a few drops of precum dripping from the tip. It was not as large as the shaft currently railing her pussy, but where Celestia won out with girth, Luna easily compensated with length. Luna’s cock was slender and elegant, her flare a lot less pronounced than her sister’s; it made Celestia’s stallionhood look stocky by comparison. And Luna seemed quite impatient to use it.

Cadance didn’t try to fight Luna’s imperious hoof as it hooked around her head, keeping her still as the alicorn pressed her cock against her lips. Cadance quickly took the slender flare into her mouth, eager to please Luna; maybe if she showed she was willing, Luna would treat her more gently. She started to suck and lick with expert ease, the constant thrusting in her cunt only marginally slowing her, and she smiled confidently as she heard Luna moan overhead. She bobbed her head enthusiastically, happy to she was regaining some semblance of control… But Luna chose that moment to brutally thrust into her muzzle.

Cadance gurgled in surprise as Luna’s cock plunged down her throat, the alicorn shuffling over her until her nose was pressed against Luna’s sheath, chin bumping against her enormous balls; the pink princess whimpered in fear, it felt like Luna was all the way down to her stomach, so long was her stallionhood. Behind her she felt Celestia hammer into her cunt even harder, the alicorn apparently enjoying watching her sister deepthroating her lover. Cadance mumbled around her mouthful, trying to ask for mercy, her neck bulging with the outline the long stallionhood.

Unconcerned, Luna started to hump into her muzzle, one hoof keeping her head steady, her cock thrusting up and down her throat, but never leaving it completely. Cadance sputtered, almost choking on her own saliva, but thankfully she could swallow around the slender shaft, even take shallow breaths. Cadance thanked her lucky stars for the fact that Luna was not as large as her sister; she wasn’t sure Luna would be as careful as Celestia if she was to pass out. Retching and choking, Cadance endured the double assault, both her throat and pussy stuffed with alicorn cock.

Luna exhaled happily, her hips giving shallow little thrusts, quite happy to remain hilted down Cadance’s throat. She gave a sidelong glance at her sister, the two of them side by side as they spitroasted the mare underneath. Celestia was still blushing, her expression torn between shame and excitement, and a little disappointment. The Solar Princess was now pounding into her lover with wild abandon, but her attention was completely focused on her sister; Luna almost pitied Cadance, to be used in such a way by a distracted lover.

Luna had always known Celestia harbored a secret and immoral lust for her body, she had caught her eyes lingering on her rear more times than she could count. Celestia always looked away, ashamed of her interest, and Luna thought nothing of it; after all, they had both been sexual goddesses in their youth, creatures focused the pleasure of the flesh, it was inevitable they would become interested in the other. Luna even occasionally flicked her tail to the side, giving her sister a few glimpses of the one thing she could never have. It used to be a naughty little game, nothing more.

And now here they were, their sides pressed against one another as they shared the same mare, their gazes locked together, the taboo of their mutual attraction lifted. Luna smirked toothily, her fangs glinting, her eyes twinkling in open invitation; she had not planned to do anything quite so indecent with her sister, but they had come so far… why not go a little further? Celestia hesitated, careful as always, her mind in turmoil as she tried to reconcile her chaste sisterly love with the overwhelming lust coursing down her veins, her hips slamming into a gurgling Cadance, her tight pussy clamping down on her cock, making it hard to withdraw. After a few more instants of indecision, Celestia started to lean towards her sister, slowly, hesitantly, second guessing herself with every little movement. Luna was not so patient.

Luna threw herself at her sister, half kissing and half biting Celestia’s lips; there was no blood drawn, but the Solar Princess felt a stab of pleasurable fear as her sister’s fangs pressed into her flesh, a burst of precum traveling down her shaft as Luna’s tongue invaded her mouth. Luna was even less gentle than she had been with Cadance, saliva dripping down their chins as they deepened the sloppy kiss, but they didn’t care; all that mattered was the forbidden love they felt for one another, the intense kiss the only thing they needed to convey their feelings.

Jealousy, sisterly love, lust, old wounds, desire… They shared it all, Luna dominating the kiss, Celestia happily surrendering to her sister. They both thrusted into Cadance’s respective holes, the poor princess jostled from all sides as she was used as a receptacle for their incestuous lust, her weak pleading gurgles going completely unheard; there was no mercy to be found in the two alicorns rutting her silly.

The two sisters separated, both thrusting away, both imagining they were fucking the other, a trail of saliva linking their lips as they stared at one another with naked hunger; Luna smiled hungrily, Celestia gave a pleading mewl. They were back to kissing each other in the next instant.

Celestia’s thrusts soon became erratic, her cock plunging into her mate without rhythm, the alicorn escaping the heated kiss to pant raggedly, her release growing closer. Cadance gave a muffled whimper under them, knowing there was nothing she could do to stop Celestia from spilling her seed inside her. She could feel her flare growing larger and larger, pushing against her tight cunt, stretching her cervix open; she would undoubtedly carry her foal again if she kept going, Luna would surely stop her?

But instead of doing anything to stop her sister, Luna began to hammer into Cadance’s throat with new vigor, her thrusts precise and elegant, using her full length as she went balls deep into her muzzle, her heavy testicles slapping against her chin with every roll of her hips. Luna tried to take Celestia’s lips back, but the alicorn leaned away, still trying to regain her breath. Enraged at being denied, Luna growled, her lips curling back into a snarl, her eyes focused on Celestia’s neck.

Luna struck like a snake, her fanged jaws closing around Celestia’s throat, the wicked canines pricking her coat without actually injuring her. Celestia screamed in both fear and arousal, the submissive alicorn feeling like a rabbit trapped in the jaws of a wolf, her cry melting into a guttural moan as she felt her balls clench, her seed rushing down her shaft. Celestia gave a few last desperate thrusts, throwing Cadance into Luna’s cock, and she hilted hard enough to redden Cadance’s flanks. She remained pressed as deep as she could, flare mashed against Cadance’s cervix, medial ring quivering against her folds, marveling at how perfectly matched she and her lover were, and with a strangled cry she came.

Jets after jets of thick alicorn spunk fired into Cadance, Celestia’s magic washing over her barren womb, making it fertile and ready to carry their second foal. Cadance instantly went into heat, her body releasing an egg to be fertilized, Celestia’s cock spurting more and more baby batter into her mate, making sure she was the one to claim her. Celestia’s release surged on, helped by the abject fear she still felt as Luna kept holding to her throat, those wicked fangs pressed squarely against her jugular; one little bite, it was all it would take. Her balls rumbled, emptying their load in a rush of survival instinct; as far as her body was concerned, she might get killed at any moment, her instincts to leave behind an offspring running wild, her sperm heavy semen ready to plunder Cadance’s womb.

But, strangely enough, no matter how much Celestia came, she didn’t feel her release pushing back against her tip; by this point Cadance’s womb should have been sloshing with her seed, filled to the brim, the excess leaking around her flare. Celestia whimpered, her eyes darting back and forth in confusion… until her gaze fell on Luna’s horn; the dark blue aura shone brightly, betraying the power of the spell Luna was using.

Celestia watched the magical display in confusion, wondering what Luna was up to; she then heard a splattering sound coming from behind her, and she carefully twisted her head around, looking for the source. There, floating over her rump, was a dark portal surrounded by Luna’s magic, and bubbling in the dark blue field, was a huge blob of what could only be her semen, all of it. One last burst of seed traveled down her length, and she saw the spurt traversing the portal as her cum left her tip. Celestia cried out in protest, but Luna held her neck with a warning growl, an amused smile appearing on her lips. Celestia couldn’t believe it.

She had been had.

Luna chuckled darkly as Celestia’s cock started to go limp, a little pathetic whimper escaping the Solar Princess’ lips. She finally released her neck, taking a moment to admire the lasting mark she had left on Celestia’s coat, a burst of pride making her cock throb inside Cadance’s throat. Celestia stumbled back, dazed by the intense bout of mating and kissing, her cock slipping from Cadance’s oozing pussy messily, a dark portal still firmly lodged against her tip, making sure no drop of seed entered Cadance. Celestia collapsed on the bed, heaving, and Luna threw her hips back with a grunt, her still hard cock bursting from Cadance’s lips with a shower of precum and saliva.

Cadance coughed desperately, the poor princess taking great gulps of air, mixed fluids running all over her muzzle; she laid down next to Celestia, her chest rising frantically, her eyes fluttering. Luna titled her head, watching her wheeze like she had run a marathon. It seemed Cadance has been on the verge of choking on her cock, she expected better from the Love Princess honestly. Still, Luna wasn’t interested in her mouth, and her cock was still primed and ready to breed her, now that she was in heat and fertile, courtesy of her sister. She just had to take care of something before claiming her mare…

*******************

After a few moments of desperate panting, Celestia stirred, looking at her sister with an accusing expression. “You… you tricked me…”

“Verily.” Luna nodded, smirking at her. “How else did you expect me to fertilize Cadance? I needed her to be in season and fecund. My skills lie in the pleasures of the flesh, I do not possess your powers, miss Fertility Goddess.” Luna sing songed Celestia’s old title, then her nostrils flared, her eyes widening. She took a deep breath, her cock slapping against her belly, her hips quivering. “Hmmm, yes, perfect.” Luna stared at Cadance, licking her lips. “Nothing is quite as delectable as the scent of a mare in heat, ready for breeding, don’t you agree sister?”

Celestia sighed, admitting defeat; Luna had played her like a fiddle. “… Was all the kissing part of your plan too?”

Luna blinked, hesitating for the first time, her eyes darting to the side to avoid looking Celestia in the eyes. “… No.”

“… Do you regret it?”

“You know I do not.” Luna’s eyes flicked back to Celestia, but this time it was the Solar alicorn who avoided her gaze. “… Do you?”

“… No.”

“…”

“…”

“… Sister this is really awkward.”

“Well,” Celestia gulped, biting her lips. “as long as we do not go any further…”

“Aye, twould be most unbecoming if we went further.” Luna nodded.

“Hmm, it would be awful.”

“Awful yes.”

“Yes.”

“Oh will you two just have sex already.” Cadance grumbled, her throat still a little raw from the brutal pounding she had received. “Perverted, AND incestuous, I can’t believe I got myself into this…”

Celestia blushed deeply, the alicorn flinching back, but Luna only raised an eyebrow, giving Cadance a deadpan stare. “And what of thee? Princess of Love, and infidelity? Thou are hardly in any place to give lessons on morality.”

“I love my Shiny.” Cadance growled, avoiding Luna’s glance. “I just did what I needed to…”

“Nonsense.” Luna snorted, her cock slapping on her belly in agreement. “What if you are unable to bear a foal? Well you could have adopted. You wanted to have a biological child and needed Celestia’s help? Well you could have just told your husband.”

“I couldn’t…” Cadance looked down, pouting stubbornly. “I was afraid he would leave me…”

“You do realize that is quite ridiculous?” Luna tilted her head, watching Cadance curiously. “Your dreams have always been closed to me, so I do wonder, what made you so afraid of losing your husband?”

Cadance hesitated, then she mumbled, barely audible. “The wedding.” Celestia and Luna shared a glance, before they focused back on Cadance. “Chrysalis locked me up in a cave, she took my place, she wore my bridal gown, she went down the aisle before me… and she stole my husband in every way.” Cadance shuddered in disgust, a wince crossing her muzzle. “The smell of that… mare, it was all over him when I got my Shiny back. It was impossible to wash off, clinging to his coat, his mane… our bed.”

Celestia cringed in sympathy, and even Luna inclined her head in acknowledgement. Cadance went on, speaking in a monotone voice.

“I had to tolerate Chrysalis’ scent during the wedding ceremony, I could smell her on his breath when we exchanged our vows, I could taste that monster on his lips when we kissed… and I found bite marks all over his body during our honeymoon. Not the bad kind… the playful kind.”

Luna’s eyes flickered to the bite mark on Celestia’s neck, it was a signature, of claim of possession; Chrysalis had been thorough in her enjoyment of her stolen groom, more than she had ever thought.

“She didn’t bite him deep enough to actually injure him, but her fangs still left clear scars on his neck, legs, thighs… even on his stallionhood. Especially on his stallionhood.”

Luna signed, her curiosity sated. She now understood. Each bite mark had been like a personal insult, reminders that Cadance’s husband had been claimed by another, one last jab by the changeling queen. It had probably driven Cadance mad with jealousy.

“I never blamed my Shiny for it, he was innocent, she had brainwashed him… but it still hurt like Tartarus.” Cadance turned a resolute stare towards Luna, the princess slowly rising to her hooves, ready to do anything to keep her marriage safe. “He’s my stallion, my Shining Armor, and I would do anything and everything to never lose him again.” She set her jaw, flicking her chin up.

Luna’s eyebrow rose, then she turned to Celestia. “Do you think being completely mad is a trait for young alicorns?” Luna asked her sister, completely serious. “Because between my past lunacy, the sexual craze you exhibited as a teen, Twilight’s neurosis and Cadance’s obvious insanity…”

“Luna!” Celestia scolded, her wing opening to hug Cadance close; the pink princess snuggled into the feathery embrace, looking like a baby swan trying to hide under her mother’s wing. “We should try to help the poor dear, not judge her…”

“Oh, but I am helping her.” Luna smirked. She then turned to the still open dark portal she had used to get into the room, and she spoke to the shadows. “So, what do you think?”

To Cadance and Celestia’s great horror, a new form detached itself from the darkness, the white fur and electric blue mane making him stand out against the shadows. He stepped into the room, his eyes betraying no emotion as he looked at Cadance’s panicked expression, his lips drawn into a tight line; Celestia looked just about to faint, while Cadance was starting to hyperventilate.

Shining Armor’s gaze flicked to Celestia, then Luna, before turning back to his terrified wife. He took a deep breath… and a big grin spread on his muzzle, his eyes twinkling, not a trace of anger or sadness in his happy expression.

“Well, I think you should always share with the people you love.” Shining Armor declared, still grinning wide. He gave his unbelieving wife a reassuring nod, just to make sure she knew everything was fine, Cadance’s eyes brimming with tears of relief. His gaze then turned to a shocked Celestia, and his eyes twinkled with mischief, and just a hint of lust. “And I do looooove sharing.”

Author's Note

This story hasn't been proofread, I don't have much time to write anymore, so please, if you see mistakes, don't hesitate to give me a PM and I'll fix them.

Cheers!