Keeping Chaste: Sweetie's Sleepover Story
A Night at Carousel Boutique
"Let's see...extra clothes, undies, toothbrush, some books of course, healthy snacks, handkerchief, sleeping roll...hmm, that should be everything for at least one night. Have a fun time, son!"
"I will, mom! You have a fun night, too!" you waved, barely managing to glance over your stuffed backpack. Ever since arriving in Equestria as a toddler, you were proudly raised by Twilight Sparkle into the blossoming young man you were today. Even if she didn't share your genetics, you never thought of her as anything less than motherly. Albeit slightly bookish at times, she always wanted the best for you; she taught you the ways of Ponyville, helped you make new friends, and introduced you to her own. Of course, that's how you met your present marefriend, Sweetie Be-
"Oh! Ask Rarity to bring back the book 'Fashion Through the Ages' when she comes over tonight!" Twilight requested, all the while buzzing about the library and setting up streamers. You rolled your eyes, reminiscence interrupted by characteristic book-talk. Tonight was Pinkie Pie's birthday, and your mom insisted that she host the party with the help of her closest friends. In the end, Twilight will always be Twilight, and you loved her for everything she did for you and her companions.
"No problem, I'll make sure to pass on the message! Bye!" you closed the heavy wooden door on your way out. The warm night air met you well, and set a perfect atmosphere for anxious excitement on your way to Carousel Boutique. Although Rarity had always been welcoming of your relationship with Sweetie Belle, she never allowed you to stay overnight, even despite your marefriend's constant pleading. However, given the length of your relationship and having seen the genuine closeness of it, Rarity finally relented to the filly's requests and allowed you to spend a non-school night sleeping over. Still, you couldn't help assuming that it also had something to do with the upcoming party. Mom never liked having you exposed to Pinkie's late-night soirées; spending the night with Sweetie Belle while the adults whooped it up at the tree house made sense in a way.
In no time your thoughts wandered to Sweetie Belle and the night ahead. Sure, most of it would probably be chaperoned by Rarity, but who cares? If you were lucky, Rarity might have made something really tasty for dinner. If you were even luckier, Rarity might leave early for the party. Then, you could steal a peck or two from Sweetie before bed. You remembered the first time you kissed; a memory flooded back of the filly taking initiative after you gave her a hand-made card for Hearts and Hooves day. Her soft little lips mashed against yours out on the playground, smudging the line between human and pony with amateurish smooching. Your youthful inexperience happily welcomed Sweetie's kisses, and in no time, found yourself rather 'physically uplifted'. With support from both Twilight and Rarity, the two of you explored many an innocent dalliance together, yet never anything carnal. However as time passed and youthfulness progressed, you found the filly's kisses to linger longer with each oral coupling...
The memory of Sweetie Belle's cute squeaks when you first pulled her close made you blush; Carousel Boutique rose from the horizon. With the sun casting its gaze over the building, you saw a slight rustling of curtains. Your well-dressed marefriend, eagerly watching for your arrival, quickly summoned her sister and bounded to the front door. Opening the decorative entrance with a flourish, little Sweetie Belle greeted you with a smile that matched the adorableness of her attire.
"Oh my gosh! You're here as early as you said you'd be! That's perfect, since dinner's not even ready, so we can play some board games and talk about cutie marks and crusading and school an-"
"Now now, young sister, give your date a moment to at least arrive within the doorframe!" Rarity interrupted Sweetie's river of words with an aristocratic chuckle. In no time, your eager pace brought you to the entrance of the girly, yet homely, boutique. Reaching back into your sleeping roll, you grasped for the special gifts you hoped your mother didn't crush while stuffing your pack.
"Hi Sweetie Belle! Hi Miss Rarity!" you greeted with a pleasant smile of your own. "I picked some of these for each of you."
Gingerly, you tugged some stems from their cotton cocoon to reveal a smart little bouquet of flowers. You gave the little purple ones to Rarity, and the little red ones to Sweetie Belle. You weren't really sure why color mattered, but your mother made it clear to give the ruby-red mélange to your marefriend. The foal only managed a soft 'squee', her eyes curling at the corners with bubbling joy. Rarity took the moment in stride, sniffing the flowers and easily finding her own words.
"My, what a gentlecolt little Sweetie has wooed. So precious that you would bring flowers for your first night over. Perhaps I'll need to steal you away for myself after few years time." the fashionista tittered. The statement didn't set well with Sweetie Belle, who looked sharply at her elder sister with a pout of betrayal. "Kidding darling, only kidding." Rarity cooed. "Ah, to be young and in love. Come now, in with the both of you. I must check on the carrots."
After ushering you both into the boutique, Rarity locked the door and trotted off into the kitchen. In the meantime, Sweetie Belle grabbed the end of your sleeve with her mandibles and tugged for you to follow into the main foyer. You set your hefty backpack on the floor, and spied a small board game already set up along with a silver-craft bowl of blueberries. The cozy set-up of couches and blankets looked meticulously planned, surely by Sweetie Belle herself if her proud smile had anything to say about it.
"Looks great, Sweetie! We can start in here until dinner's ready. Speaking of which..." your gaze wandered over to the tasty looking berries. Sweetie's eyes followed yours, and she quickly mustered up some magic to levitate the bowl into her hoofs.
"Well then," the foal attempted to mimic her sister's aristocratic tone. "I think it's time my human had a little snack!" Sweetie daintily held the silver bowl and levitated a plump blueberry to your lips. You opened your mouth and took the morsel in, popping open its skin with your molars. As you paused to savor the sweetness and take another berry, your eyes had a chance to drink in your marefriend up-close. Sweetie Belle was primped to the nines. An adorable daffodil-yellow skirt slipped from beneath a rose petal jacket that snugly held the young mare's bodice. Sweetie's striped pink shirt matched well with her cute bootsies, which were lightly heeled to bump up her maturing plot an extra inch or so into the air. All-in-all she was quite the sight, and your heart readily agreed with heavy thumping. It certainly wasn't the blueberries you suddenly felt hungry for...
"So, do they taste good?" Sweetie Belle fluttered her eyelashes, feeling mature and attractive while she alternated feeding you and herself.
"They're delicious!" you grinned back with a wink, your teeth obviously stained with a slight trace of blue. This elicited a pealing laugh from you both and revealed Sweetie's own set of oral stains. It was soon that you both decided to sit down and play a bit of backgammon with Sweetie's fancy custom pieces and game board. The sound of clacking wood and stories from school filled the air, and before long the bowl of berries was almost empty. Sweetie Belle was heavily focused on the shake of her dice cup, and slipped into a bit of marish behavior as a result; her maw scooped up the remaining blueberries and chewed them sloppily. You clasped a hand to your mouth, stifling a laugh as the blue juice thoroughly strained the foal's ivory muzzle. Sweetie's magic upended the oak cup, and the dice spilled onto the board.
"One...two...three...four...five..." she clicked her pieces along in deep thought before noticing your expression. "What's so funny?"
"Blue lips look cute on you."
Sweetie Belle wiped her mouth with a blush, but only succeeded in further smearing the colors around.
"Here, let me help you out." you reached over into your bag from home and removed the soft cotton handkerchief. Sweetie Belle happily trotted over, and sat close to your side. Leaning over, you wiped the blueberry remnants from her snout and lips in smooth motions. Sweetie's deep-blue smile quickly returned to one of snow-white bliss; your close-up faces allowed her flirtatious nostril huffs to bathe you in sweet breath.
"Th-thanks..." Sweetie Belle chirped, unable to look away. In the heat of the moment, you could almost feel and invisible tug against your chest; your peripherals caught subtle flicks of Sweetie's raised tail. She had peridot eyes that seemed to plead with you in silence, the only way she could communicate when words escaped her brain; a truly beautiful mare...
"Yoohoo, diiinnneeerrr~" Rarity's sing-song voice interrupted the building moment. Suddenly the aroma of deliciously cooked veggies replaced Sweetie Belle's marish scents and triggered your stomach to growl. The fashionista trotted around the corner, smiling. "I certainly hope I'm not interrupting your delicate game, but I have prepared a delightful meal for us all. Shall we?"
As a trio, you happily marched off to the kitchen and took your respective places at the table. Rarity, appreciating the romanticism of the evening, set aside a pair of chairs close together for you and your marefriend. However, upon sitting down, Sweetie Belle couldn't help but scooch yet ever closer to your own seat; Rarity rolled her eyes at her little sister's foalish enthusiasm before dishing out portions of supper. A delicious array of carrots and onions were sautéed together in sunflower oil before being set aside to brown. The resulting smell of caramelized veggies made your mouth water. Taking a generous portion of hot carrots and onions, you were also served a healthy dollop of home-made pinenut hummus and soft pretzels for dipping on the side. Together, the dinner made a delightful pair of hot and cold dishes that tempted the pallets of both human and pony alike. You and your marefriend readily dug in.
"Wow, Rarity! You're such a great cook. Thanks so much for making this for us." your mouth cleared enough to praise her culinary skills before another mouthful of piping-hot sweetcarrot was shoveled inside.
"Not a problem at all darling, but it was Sweetie Belle that helped pick out the ingredients at the market." she passed a nod to the filly, who beamed at you in return.
"I should have known." you chuckled. "Everything tastes perfect."
"It was no problem at all," Sweetie Belle sat proudly and took a delicate bite from a hummus-coated pretzel. "I'm quite the carnes...quaoarnes..."
"Connoisseur, darling."
"Right! Conn-ois-seur...of fine foods. All for my coltfirend, of course." Sweetie Belle fluttered her eyelashes once more after the correction from her observant sister, who merely shook her head with a grin.
The rest of the meal went smoothly, and you were happy to stuff yourself full before helping Rarity clean up the dirty dishes. However, the dishes weren't the only things on schedule to be scrubbed up. While you were cleaning off bits of food, Sweetie Belle and her sister had a little chat.
"Alright then Sweetie Belle, it's bath time."
"Awww....can't I take it with him?" Sweetie Belle pinned her ears back, whispering the question.
A silent Rarity narrowed her all-knowing gaze before raising an eyebrow.
"Come on, Rarity, I'll still put 'it' on. I don't need your help washing me, at least. I won't look like an adult mare otherwise..."
"Now sister, we've discussed this at length, and you are indeed more than capable of washing yourself. However, he's spending the night alone with you, a growing mare, who takes after her sister and mother in the ways of....'that time'. I must insist on my assistance before I leave for Twilight's house." Rarity responded in an equally hushed tone.
"Oh, fine..." Sweetie Belle resigned herself to her fate and trotted off to the bathroom, grumbling all the way. Rarity followed shortly after, but not before she acknowledged your hard work.
"Thank you for your help; you're a true gentlecolt. When Sweetie Belle is finished in the bathroom, you may take your turn in the tub. I might be gone by the time you're finished however, so please don't fret. There's extra hummus and pretzels in the kitchen if you get hungry during the night."
"No problem, Rarity. Oh! Twilight said you borrowed a book from her about fashion. She asked me to tell you to bring it back with you tonight when you come over."
"Ah, yes! 'Fashion Through the Ages' I believe. I shall do just that. Thank you for passing along the request...and also," Rarity paused with a coy smile so slight that it was nearly unobservable. "Take good care of Sweetie Belle." She rounded the corner, and you heard the sounds of a shower system working watery magic.
A part of you wondered what Miss Rarity implied, but you decided better of it as you finished your kitchen duties. After placing the plates on the drying rack, you went once again to your bag from home. From it you took your basic toiletries and a spare set of night clothes, then laid out your sleeping mat. Before long it was your turn in the bath while Sweetie Belle changed and Rarity prepared to depart for the party. Despite the girlish faucet features and baskets brimming with aromatic shampoos, you enjoyed the feeling of hot water cascading over your skin and were able to finish your shower. Good thing since you were eager to get back to spending time with your marefriend. After toweling off, you slipped into your bed clothes and out of the bathroom. From the sound of silence, it seemed as though Rarity indeed had left for Pinkie's party. Squeaky-clean and relaxed, you rounded the corner to the main room and were met with Sweetie Belle in a full set of pj's, covered hoofsies and all, anxiously awaiting your return. Something seemed a bit 'off', almost as if the foal was deep in a rather sullen thought; Sweetie's expression personified mute disappointment. However, the face of the minx that courted your heart came alight once she noticed your presence.
"Welcome back!" Sweetie noticeably beamed. Walking towards her, you looked at the changed layout of the room. Sweetie Belle seemed to have shoved your sleeping gear together and procured one giant blanket for you both to use. She smelled fresh, a subtle aroma free of perfumes, but still had a mysterious spice of maturity that teased you senses; you couldn't place the slight musk. "Come on over. Rarity already left the house, she said not to wait up since she expects to be gone for awhile. Come sit with me." The filly made a show of flourishing apart the bedding to make adequate room, and you quickly took your seat. She seemed to have kept the backgammon board as-is, having placed it next to your sleeping mat. Perhaps she was in the mood to resume the game?
"So, do you want to fini-mmph!" You were cut off by Sweetie Belle's lips. Urgently, they explored your own for several heavenly seconds before Sweetie pulled back. The filly looked as if she wanted to speak, yet only a mewl escaped her downy-soft lips. As if flipping a switch, no other craving did the young mare wrought in your mind but masculine need; you grasped Sweetie's mane and dove forward for a second helping.
It was initially awkward kissing a little horse, but you and Sweetie managed just fine. Her prehensile lips, far more flexible than that of a human, always massaged your own with amazing skill. Your responded in kind with a slow massage down her withers, eliciting an undoubtedly equine knicker of satisfaction. Eventually, your bodies met with an embrace that became increasingly less innocent. Sweetie Belle shivered at the ensuing entanglement, her core temperature rising to meet your own. It wasn't long before an erection began to grow rapidly within your underwear; Sweetie easily noticed your girthy pole prodding her soft skin.
"I really want to see it." The mischievous foal only grinned and nibbled your upper neck in a grooming fashion, using inexperienced magic to tug off your shirt and trying to lower your strained pants. This was the best opportunity Sweetie Belle had to get to see her human's organ up-close, and she refused to squander it.
"Allow me," you pulled the obstructive fabric down around your waist and kicked off your bottoms. It was at your boxers that you paused. Never before had you gone so far so quick, but you trusted Sweetie Belle. Egged on by raging hormones, you slowly slid your underwear down and allowed Sweetie's eyes to devour the proud erection that sprung forth. With a resonating 'smack', it struck firmly against the foal's ribs. You suddenly felt very exposed; Sweetie Belle maneuvered into a better position to observe with saucer-plate eyes.
"Wow..." Sweetie huffed, her snorts of hot air causing your shaft to twitch with excitement. "It looks so...thick. I'm not even sure how this can fit into a mare." Driven by an unexplainable desire, the young mare bobbed her head and nuzzled your glans with curved lips. The sensation of Sweetie's rough front teeth on your tip caused you to flinch away; she lured you back with an apologetic whinny before resuming her delicate exploration. The filly's admiration was premature, however, as you would grow only larger with age and hormonal maturity, let alone further sexual stimulation.
You could smell the familiar musky odor permeate the air and you longed to feel Sweetie Belle's ivory fur against your naked skin.
"I want to see you, too." Flowing through the motions, your hands went to the neck of Sweetie's pajamas and yanked the zipper down to the base of her tail.
"W-wait a secon-"
'tink!'
You raised your eyebrows in surprise at the metallic sound. Upon sliding Sweetie's outfit off, you were met with a rather curious contraption. Two thin bands of pure silver crossed one another under her dock, lifting her tail upwards as they twisted down around Sweetie's developing thighs. In the middle of the 'X', a laboriously designed curved plate covered her fillyhood possessively, effectively blocking any access to the foal's tight little cavern that begged to be plundered. The very middle of the plate was gilded with elegant flowers and a heart, slightly perforated with tiny holes to allow breathe-ability and urination. Unfortunately for poor Sweetie, even her clitoris was enshrouded by the silver and given just enough space to prevent any stimulation despite her fervent winking. The small pinholes dripped steadily with a thin liquid, staining Sweetie's discarded pj's with evidence of her youthful arousal.
"Sweetie Belle..." you finally managed to clear your throat. "What is thi-"
"Oh my gosh! I'm so sorry!" Sweetie Belle interrupted, a mixture of arousal and embarrassment running rife across her face. "This...you weren't supposed to see me like this. It's my chastity belt. Rarity says it's to keep me 'pure' until I'm married." The filly sniffed back tears forming at the ends of her emerald eyes.
"It's okay, Sweetie..." you murmured, observing the almost air-tight seal of the belt against where fur met flesh.
"N-no it's n-not! T-this was supposed to be a s...s...special night just for u-us..." Sweetie Belle was having none of your consolation.
You couldn't blame her. It must be incredibly difficult to go through monthly estruses with rampaging filly hormones. You already knew the feeling of sexual frustration, but nothing where you weren't able to at least pleasure yourself. Perhaps you could do something help? Your tongue rolled around in your mouth as you thought.
"You're just such a good special somepony, and I...I'm just so frustra-aaaaahhhh!" Sweetie Belle cried out as you placed your lips against the small flowered heart. You sucked against the raised silver, causing the pressure to increase underneath the chastity belt. Sweetie squirted an eager stream of filly-pre into your mouth as she writhed in sexual agony. Slowly, your cheeks pulled more and more spicy nectar from the foal's guarded rose. The aroma wafted from beneath the warm metal, and set your nostrils alight. Her mare-pheromones made your erection into a diamond; you could no longer resist palming her budding foalish mounds. Sweetie's groans gave way to wails of frustration. Her mind yearned for your thick manhood to spear her burning virginity.
"P-please..." Sweetie Belle stammered out, unsure of what her swimming emotions were even begging for. "P-please..."
You paused and lifted your straining neck, her lingering flavor stoking your desire. "S-sorry if I was down there awhile, but you tasted...really good. I thought I was helping get some of the tension out..."
"...it's alright." Sweetie finally managed. Denial of any direct stimulation, let alone being barred from the man she so desperately craved, brought more tears to her eyes. "It's all dumb Rarity's fault."
"Yeah," you mumbled, tracing a finger along the seal of the magically-fastened belt. "It looks like it was made to follow your every move. I'm just surprised your butt's uncovered. I guess going to the bathroom would be too tough otherwise though. I want you just as badly. Trust me."
"Mhmm, but..." Sweetie Belle raised a hoof to her mouth as her pupils dilated in realization. Slowly, her mischievous gaze narrowed. "bbbuuuuttt...maybe that's not such a bad thing after all." She looked to you over her haunches and tossed her poofy mane aside.
"What do you mean?"
"I mean..." Sweetie Belle rose to her hooves and shook her petite rump. "Maybe you could...make love to my butt."
"What!?"
"Oh, come on," The filly's eyes pleaded with yours in a moment of genuine need. "You said that you'd do anything to help." Sweetie was reluctant to reveal that the act reached a lewdness even her fantasies were unfamiliar with.
"W-well, I..." you couldn't deny your own longings. Dreams of deflowering Sweetie's onyx fillyhood flooded your brain during many a masturbation session, but never had you imagined inseminating something as dirty as a butt!
"Please...it's really clean! I washed it in the tub myself!" Her ebony anus contrasted heavily against her ivory fur. It puckered once, almost as if reacting to your hungry gaze all on its own. She let her silken ponut do the majority of her convincing, showing off its lightly-hidden pinkness within a ring of black beneath her tail dock.
A drop of clear pre fell from the tip of your aching glans. Your throbbing cock didn't seem to protest...but would you really have your first time together be anal sex?
"But it's our first tim-"
"Please?"
"Sweetie, even if it's clean, what if-"
"Please?!"
"Hey! I-"
"PLEASE!"
Sweetie Belle took no protests and became increasingly desperate with each plea. Every sentence you uttered only led to the foal backing further and further against you. Her tiny rump rubbed instinctively against your lower stomach. The air was punctured with sounds of squelching from under Sweetie's sopping-wet chastity belt.
She really needed this...
"Alright, but only since you think it'll help, I'll...do your butt." The final thought sent a shiver down your spine.
"Really? Really?! Oh, thank you!" Sweetie Belle spun around and peppered your face with grooming and kisses, between occasional marish snorts of hot air.
"Yeah, yeah..."You chuckled, pushing her away. "But we're gonna need something to lube you up."
"Use this!" Sweetie chirped, fumbling to levitate a jar of raw sheabutter. "It's a great moisturizer for lips, and...other...stuff..." her face flushed with red once more. You were sure that if Sweetie continued to blush so heavily, she'd eventually pass out long before you would be able to split her in twain.
Unscrewing the lid, you motioned for Sweetie Belle to turn around. You didn't need to tell her twice. She spun once more and managed to hike her tail even higher in the air, presenting herself totally. A glob of lubrication rested on three fingers as you knelt, one hand grabbing Sweetie's dock to control her tail as the other hand honed in on her tight ass. The heat radiating from her was intense, and a sigh of bliss hit your ears the instant your fingers met Sweetie's wrinkled pucker. You bit your lower lip, unable to believe what you were about to do as you slowly worked the sheabutter along her taut skin.
"Put some inside...use a human-finger." Sweetie whimpered, anxious to feel your shaft anywhere inside her.
"Already on it." you replied, taking another healthy scoop and transferring it to her asshole. With one finger, you slid carefully into her gripping sphincter and proceeded to shove glob after glob inside. Sweetie Belle could feel every subtle knuckle and let lose another stream of filly-pre from her chastity. The foal wanted nothing more than to feel your masculinity steal away her estrus woes, and prayed that her anus would bring you both mutual relief. Eventually, you put the better part of the small jar's contents inside Sweetie's ass. It glistened with a thin sheen of moisture in the light and still looked impossibly tight.
"Alright, Sweetie. It looks like you're ready." you attempted to sound more confident than you really were. You weren't sure if you'd be able to fit yourself inside despite the lube and stretching.
"Then climb on..." Sweeite implored. You obliged, and mounted her from atop in what appeared a rather stallion-like fashion if not for your firm hands gripping her slender waist. The warmth of your shared body heat set the moment anew. Your thick cock smacked against the chastity belt and Sweetie silently cursed Rarity for denying her the carnal pleasure you'd easily otherwise give. Soon, your venous pole prodded the entrance to Sweetie's soft anus. You were amazed at how ready you were to breed your filly's barren field when the thought would normally riddle your sensibilities. It would be a tight fit; you took a deep breath...
"Wait a second," Sweetie Belle interrupted. "Lean forward."
You did so, and were met once more with Sweetie's tender lips. She kissed you longingly, in a manner only a love-drunk mare could. You were reluctant to leave the oral embrace.
"It's still our first time, and I want it to be special." she whispered, pulling her face into the smile that stole your heart.
"Of course." you nodded, making extra sure you were well-lubed. "I'm all yours."
"...and I'm all yours-...eek!" Sweetie was shoved forwards by your unsuccessful attempt to penetrate. You pulled yourself up, and tried once more, yet the clenched muscle barred your glans from the tight paradise you so lusted for.
Gripping your crown in determination, you pressed it against Sweetie's asshole yet again and grabbed her pert flank for leverage. This time, the foal dilated her butt and you were able to slip the first few inches inside.
The initial insertion felt better than a snow day off from school.
"Ohh....ohh, buck..." Sweetie shivered, feeling you stretch her pert butt for the first time. You slid back and forth, cramming an inch at a time inside the silken hole. Each bit of your girth stretched Sweetie Belle further apart, and she ground her teeth. Silently, she wished you weren't so big so that her innocent anus could handle you easier. A tiny rear hoof scraped the ground, reflexively wanting to buck back against such an intense feeling, but the foal resisted. Sweetie knew the only way to have you was to bare each moment at a time. She'd be damned if the night passed without the feeling of you planted to the root.
Sweetie's locked-up fillyhood drove her to the brink of madness as she forced her quivering ass backwards. Overwhelmed by the sensation, you couldn't help but let a moan of pleasure slip your lips. Who would have known a mare's anus to feel so silken, so stimulating, so...right?
Instinctively, your hips thrust back before surging forth with a lustful intensity that sent ribbons of pleasure cascading through your mind. Each ridge of Sweetie's virgin ass teased your cock fiercely, coaxing you deeper and deeper within. With the majority of yourself finally lodged within Sweetie's bowels, you gave yourself a moment's pause. The filly certainly appreciated the respite; her anus getting the chance to adjust properly. However, it wasn't long before Sweetie Belle's horny whines filled the room, imploring you to resume your work.
Your fingers dug into Sweetie's firm little booty with each thrust. A devilish grin splayed across your face, and your own drive to mate slowly took full control. Asshole or not, your young body was determined to expel its pent-up seed within the writhing foal. Each syrupy-sweet whinny treated your ears to auditory bliss. Each clench of her virgin sphincter threatened to drive you insane. Moment by moment, you became lost in one another; man and beast blurred together in an impassioned frenzy.
"H-harder..." Sweetie begged, her horn sparking a light-green hue. She squealed with delight at feeling your powerful thighs slap against hers; the final inches of your manhood claimed her filthiest orifice. Pangs of pain long since gave way to explosions of pleasure, yet poor Sweetie's fillyhood yearned for any sort of attention. She vowed to destroy her belt the moment it came off, and never again be without the pleasures of her human lover.
Onward you grunted, sweat pouring off your heated form as taut muscle shone under glistened skin. Sweetie Belle felt a fullness never experienced through masturbation alone. Even if only in her ass, she was thankful for the hard fucking. Concentrating on the mental image of your oversized cock reaming her struggling asshole, Sweetie's loins began to burn. With a loud cry to the sun goddess, Sweetie Belle clenched her anus tighter than ever and managed a ragged climax.
"M-more! N-not enough!" the foal pleaded. The lack of any direct attention to her locked fillyhood was driving her furiously mad; she was intent on letting your cock punish her asshole to alleviate the need. The silver chastity belt oozed a thick, soupy liquid as the glistening metal was sloughed-over from underneath; intricate artwork of flowers and hearts gave way to dew of the flesh. Your testicles occasionally smacked against the plate, sending vibrations that inspired Sweetie Belle to higher heights of depravity.
"Yesss....YESSSS! Take me...take me...!"
You had long since mentally checked-out. The pheromones of Sweetie Belle's swollen ponut mixed with her orgasm juices to control your every thought. Only one semblance of a command shone though the mist of lust:
Breed.
With a guttural groan, you swelled within the hapless foal. Your climax rapidly approached, and your undershaft was primed with fresh seed. Sweetie Belle felt you harden, and another set of orgasms approached rapidly. Sweetie closed her eyes and she wished you were plowing into her virginity, splitting her moist folds and impaling her tender flesh. Reflexively, her denied fillyhood blinked in and out with desperation, begging for a copious ejaculation her rational mind knew would not occur inside the virgin orifice.
"Sweetie Belle, I...."
"Inside! M-make me pregnant!" her mind was totally lost in fantasy, and she barely finished her sentence before a feral whinny escaped her mouth. Splatters of thick, heavy marecum filled her tight belt to capacity and ran through the many perforations to stain the blankets below. Sweetie's anus gripped you possessively, demanding its sacred reward. It was all too much for you to handle, and you gritted your teeth for one final thrust.
With every inch crammed inside, you unleashed your first pearly spurt of cream deep into the young mare's bowels. Torrents of hot sperm flooded her as grunts of ecstasy filled the air. Her abused onyx anus contrasted with your stark-white seed, which overran the tight carnal seal to shame the chastity belt below. Sweetie's clitoris winked in defiance of its imprisonment, a bold yet doomed attempt to reach for the heavenly seed that wastefully ran down the silver plate. Her asshole puckered greedily to hold your bountiful ejaculate, but your twitching member would not relent. Finally, your contractions tapered off, and you both came down from the shared sensation of bliss. Still lodged within your mare, you both collapsed forward onto the pillows and sheets.
"That...that was amazing." you panted.
"Uh-huh." was Sweetie Belle's only response, her face a goofy horse-like grin as she struggled to regain her mind.
You felt yourself softening, and groaned as every vein rubbed the ridges of Sweetie's sore anus on its way out. With a rather unsubtle 'pop', your defined crown left Sweetie's heavenly butt and was quickly followed by a thick stream of cum. The smell of sex and sweat hung heavily in the air, yet you couldn't bring yourself to care at the moment. Sweetie Belle curved her neck back once more, and lightly groomed you. Your arms wrapped tightly around her, and your breath once again met with earnest huffs. Although not a perfect substitute for vaginal sex, it appeared that Sweetie's anal orgasms did wonders to abate her estrus woes.
"I never thought we'd be doing this tonight, but I'm glad we did." you laughed quietly.
"Me, too." Sweetie nuzzled closer, her tiny horn sparking. "I know it was kinda sudden, but, thank you. Really, it made a big difference."
"I'm happy it actually helped. It was your butt, you know? I mean, it just doesn't really seem like a place most mares would like to be...uh...." your cheeks tint with a soft rose color.
"It's okay, I understand." Sweetie Belle matches your blush for the umpteenth time of the night. "I liked it a lot though. Like...waaayyy more than I thought I would. I'm probably not going to be allowed out of my belt if I'm left alone for awhile though. S-so...if you don't want to do it 'in there' again, I understa-mmph!"
It was your turn to catch her off-guard with a kiss.
"Nonsense. If you ever need my help during monthly estrus cycles, just let me know." you insisted with a genuine smile of confidence. "After all, that's what two people...ponies...a couple does when they're in love. They help each other."
Sweetie Belle beamed, unable to hold back a sniffle of emotion as tears ran down her cheeks. You embraced one another tightly, unwilling to let the moment go, until you the silence was interrupted by a soft squelching wink.
"Oops." Sweetie Belle hid her mouth behind a hoof. "Estrus is a real pain."
"It's fine," you grinned. "I can probably help you out again in a little bit."
With a mischievous smirk dancing across her mouth, Sweetie only replied,
"We're gonna be the best couple ever."
~*~
Outside of the window of Carousel Boutique, Rarity couched softly in awe. Getting Pinkie Pie wasted on sugar happened easily enough, and the fashionista wasn't interested in seeing yet another dance from a random stallion. Taking the opportunity to step out for a bit of air, she let Twilight know her intent to be back in fifteen. Unbeknownst to her five companions, she pranced quickly to the boutique for a silent "check up" on you and Sweetie Belle.
Using a special magical spell, Rarity glanced through the window shades and heavy curtains of her own home. It was a skill normally used by unicorn homeowners to investigate for potential home invasions before entering. The sight she saw tugged at her heart and her loins. A glance around the neighborhood gave evidence of her solitude, and Rarity gladly used the opportunity to indulge in a bit of voyeurism. She was proud to see that her little sister wooed such a virile partner, and was easily pleased that Sweetie's chastity belt remained intact. Although Rarity knew the pains of a growing mare's estrus, she also understood that to rush into such carnal affairs wouldn't do at all; she had been witness to such experiences never shared with her younger sibling. Ever the romantic, for good or ill, she would see that little Sweetie's vaginal purity stayed untouched until the night her groom could have the honor of deflowering her...just like the little aristocrat she was born to be.
"Congratulations, you two." Rarity whispered solemnly to herself before finally turning to head back to the party.
"I look forward to seeing you both at the altar someday."
