Polyamory

"We should go home!" Crystal Hoof hyperventilated.

"We can't!" Gleaming Spear shook his head, "Mom'll be furious! We'll only get a half-serving of love for the next year!"

"At least she won't kill us!" Crystal exclaimed.

"Oh come on," Spear rolled his eyes, "Ponies forgive anything. You'd have to drop balefire on half of Equestria before they'd even consider execution."

"You think?" Crystal wasn't any less freaked.

"Yes! Now shush!" Spear said, "We're almost there."

The two approached Cadance's room, and gave an awkward smile to the guards at the door. The dozen guards. Didn't this usually involve a pair of guards? That probably didn't bode well.

"Hey guys!" Spear stammered somewhat, "Have you met my husband? We're here to see the princess... and prince."

"I bet you are," smirked one of the guards, but all the same turned to knock on the door. "Princess? Your appointment is here."

"Excellent!" Cadance called from inside. The door opened and she poked out her head, "Hello boys!" She looked at the guards, "I'll signal in less than five minute intervals, yes?" Whatever that meant.

"Sure?" a second guard arched an eyebrow.

"Great!" Cadance smiled.

Cadance opened the door wider and grasped both of the couple with her magic. Crystal cringed, expecting something that hurt, but she only yanked them into the room. The door slammed behind them.

"Now," Cadance's expression grew serious. "So you boys know, I'm horny, but I'm not stupid. The guards outside are expecting me to send them a magical pulse at least every five minutes. If I am incapacitated and can't do that, they will storm this room and give you both a very bad time. Understand?"

"Understood Princess," Spear gave a bow. "I thank you for... your mercy."

"Sure!" Crystal blurted out, going pale when she looked at him. It was good to know that he wasn't bested by a non-clever opponent, at least. He asked under his breath, "Do they know?"

"No, I told them that I worry that somepony is planning on sneaking in somehow," Cadance said. "But they'll figure out fast if they have to come in. And if you attempt to harm my husband, there is no magic that will fix what I do to you. Understand? Great!"

For a moment she was both hot and horrifying. Yet, once she lay out the law, Cadance's face returned to her regularly scheduled smirk. She waved her head to draw their attention to the bed.

Somehow Crystal hadn't noticed Shining there. He wasn't on the bed, but suspended above it. He was facing upward with all four limbs bound. He had also been fitted with a tight collar, a blindfold, and a ring-gag.

His hind legs spread as wide as they could without popping them out of joint, each tied around the knee with a rope knot. Each had two ropes that connected them to hooks on the ceiling above their bed. His front legs were bound on either side of his head, wrapped around the knee and ankle to hold them still. Each of those attached to the ceiling as well.

His collar wasn't attached to anything, which made his head hang back. He was fast asleep, so it hung limp. His gag was obviously made to hold his muzzle open while allowing a large stallion to push into his maw through the ring. His silk blindfold was tied tightly as well. His shaft wasn't limp like his head, but rather hard. It pulsated as if in instinctive anticipation of what Cadance had in store.

If that wasn't enough, Crystal could feel the emotional bond that Cadance felt when she looked at him. It was intense, like Crystal had chugged a glass of Everfree cider. He hadn't gotten close enough to Cadance or Shining at the wedding to realize how intense the couple was, and this was just the one of them.

"Wow!" Crystal slurred, "You're really gonna' let us... really?... I call tail hole!"

"Nnngh," Spear didn't act as drunk as Crystal, but he was a lot better at not showing it. He was a much more competent spy than Crystal.

"Really?" Cadance grasped Crystal by the tail and held him when he staggered toward the bed. Crystal walked in place a bit before he realized that he wasn't getting any closer to Shining.

"Did I do something wrong?" Crystal asked, trying to clear his head enough to understand what answer she gave.

"He's blindfolded for a reason, gentlemen," said Cadance, "So you can do this in your true forms. I've never gotten to see changelings at play... not up close at least." She looked at Spear, "You too."

"How'd you know I was a changeling too?" asked Spear. "And not some possessed guard?"

"I didn't know for sure until you said so," said Cadance. "But I figured. Changelings don't take their true form around ponies they're trying to deceive." The alicorn had put serious thought into how to deal with changelings. Goodness knows she had reason to.

Spear looked reluctant, but Crystal couldn't have been happier to drop his facade. A pony that not only wanted time with him, but actually wanted it with him in his true form? This was amazing! The last of his reluctance evaporated in a cloud of delicious love fumes.

Thorax flashed into his true form. Almost. He did size up his goods a bit. Doomie followed suit, though still looked a good deal more nervous. Thorax noticed that he had sized himself up a bit as well though.

Cadance leaned down to get a look at those goods. They spilled out of slits, tucked between the chitin plates that met at their groin. They were quite different from ponies.

They had tapered tips, ridges down the sides, and even a hint of a knot near the base. What's more, they slid free of their home slick, lubricated already by the natural juice in their slit.

For a moment, Cadance looked like she was going to pin one of them down and give herself a ride. She resisted though, shivering.

"Oh you're as big in your natural form, hm?" Cadance sounded incredulous. "Oh, it comes out already lubricated?" She sounded thrilled, sliding a hoof against Thorax's as if to confirm. "Oh I'm liking changelings more and more."

Cadance grabbed the bottle of lube she had retrieved and dropped it back into her toy box. Won't need that.

Yet, she didn't seem to care if they were faking it, so long as it kept that unique shape. She leaned down to take a sniff at each, her tail wagging her scent in their face as she took in their own. Thorax wasn't sure how good his musty, buggy smell was to a pony, but she appeared to like it.

"Here's what we'll do," said Cadance, "I'm going to wake Shiny up, and you two are gonna bang him as hard as you want. Then, if you feel like fucking a mare too, you'll bang me. Deal?"

"I always feel like anything sexy," Thorax grinned, though that was true of any changeling by definition.

Shining took a deep breath as he awoke, seeming to take in the scents to ensure his wife was present. He seemed to pick it up beneath the unfamiliar musk, and smiled. Thorax groaned out loud as Shining's consciousness brought another stream of gourmet emotion.

Cadance stayed silent. She backed a few feet away from the bed to sit on her haunches. Her eagerness was clear from her drenched thighs that formed a puddle where she sat. She reached both front hooves between her thighs and rubbed circles around her vulva. Her eyes locked onto her new friends to see what they'd do.

"Eetie?" Shining tried to speak. He rocked back and forth in his restraints. He ran his tongue around the ring gag and grinned.

"Uh, hey guy," Thorax said to Shining, a bit drunkenly. "Um, how you doing?"

"We're here to fuck him, not to make friends," Doomie reminded.

Shining perked his ears at the two voices he didn't recognize. Thorax had a normal voice by pony standards, but Doomie's was less so, like it was running through a magical vocoder.

Shining didn't panic or seem nervous though. Actually he looked excited, cock pulsating as he writhed a bit in his restraints. Thorax wasn't sure he could ever trust someone enough to be comfortable in Shining's position, but luckily he didn't have to.

Thorax nuzzled at Shining's heavy ball sack, running his tongue over the taut flesh. Shining pushed his hips against Thorax's muzzle as he bathed the rod with his tongue, savoring the flavor. It tasted better than Spear's, perhaps because Shining was a real pony, or because Shining was just hot in general.

The changeling tugged himself into a mounting position, his own shaft flopped against Shining's. Shining grew still as their stallion-hoods throbbed together, immediately picking up the abnormality.

"Uh?" Shining grunted in question, and Thorax wondered if the stallion had ever seen a non-pony dick. Well he was about to feel one. "Ube?" He asked timidly.

"Lube?" Thorax chuckled, dragging his shaft downward. He traced it across Shining's balls and then tucked beneath them. "Nope."

"Oh uck," Shining said.

"He should put that muzzle to better use," suggested Doomie. "Wonder if he's ever had a stallion in either end..."

Cadance smirked and shook her head.

"Wow, oh wow..." Thorax nudged against that tight rear. "I'm gonna’ fuck a prince! This is amazing!"

Doomie sighed at Thorax for his excitement. All the same, he pulled himself up on the other end, the ropes creaking even more as the knots tightened. Shining grunted as his body tensed up. One might have thought he didn't want it if it wasn't for the fact that he licked Doomie's tip as soon as it was in range.

Luckily for Shining, the pre-lubed changeling anatomy didn't chaff. Though, that didn't mean it was easy to get inside. Thorax strained, writhing against Shining. Shining grunted with a bit less confidence as he felt the furless, scaly body against him.

Shining squealed like a filly guide in a box of snakes when Thorax finally popped inside. Thorax rolled his eyes back at the tight heat of a real pony around his shaft and plunged deep. He held little back, but grasped Shining's waist and unleashed a flurry of poundings.

Doomie muffled the squealing shortly after via a hard one down Shining's throat. Shining got a crash-course in cock-sucking as he started to gag. He gave a valiant effort to work it with his throat like Cadance could, but it wasn't easy while bound and spit roasted.

Thorax paused for a moment, timid that he might hurt the recently-virgin stallion. Shining responded by rolling his hips against Thorax more as if wanting more though, so Thorax wailed on him. Thorax spanked Shining's balls with his belly and Shining's plot with his own balls. Thorax could feel the tight pucker popping over every ridge with each long stroke.

Thorax didn't know if Shining was a natural at taking it up the bum, or if Cadance's influence just had Shining as high as Thorax was. Either way, he was sure the prince would feel this in the morning. He began to work as a team with Doomie, bouncing the stallion back and forth between them.

The brothers leaned together and enjoyed an affectionate kiss, seesawing the borrowed toy back and forth between them. Thorax ran his hooves further up Shining's body, moving one to the stallions' throat to feel the bulge of Doomie's shaft. Shining's throat was still twitching around it, as his rear was twitching around Thorax's cock.

Cadance bit her lip as she watched. After some time, she could no longer take watching or hearing the smack of hot boy bodies against her husband. She had to join in.

As high as he was, Thorax took a moment to register Cadance's soft body against his face. She seated herself atop her husband cowgirl style, facing Thorax. Thorax leaned against her chest and purred as Cadance stroked his head.

"Such an affectionate tyke," Cadance purred back, "Oh I can't wait to wrap myself around you, but first..."

Thorax reached to grasp at Shining's shaft to assist, but it wasn't needed. If there was anything Cadance was good at, it was manipulating her favorite toy. With a single flex of her hips, she slid his tip to her entrance and sat down upon it, her tight vulva sliding over him with a delicious slurp.

Cadance pushed Thorax's head downward. He licked at her breasts, which were already swollen a bit with her pregnancy. He alternated between slurping each of them, and wrapping his long tongue around Shining's dick. He rumbled, vibrating the penetration between the two.

Shining's body was trembling like a drugged-out leaf in the wind as he felt that familiar pleasure furnace around him. Beyond that, Thorax felt himself getting close and arched his body to grind those ridges against Shining's prostate. Thorax clenched his teeth, face cradled against Cadance's belly as he strained to hold himself. It'd be impolite to go off before the guy he was boning, after all.

Shining squealed the best he could with Doomie's beef whistle stretching his neck and balls smacking his face. He went off so hard that Cadance clung to Thorax as if afraid she might get blasted off. Thick spunk backwashed from the pulsing honey pot. Thorax slurped in as much as he could, filling his maw until his cheeks puffed out.

Thorax turned his head up to gargle the thick pony seed, only to gag up a fountain of it when his own climax hit. Shining's belly bulged even more than Cadance's, giving her a nice cushion to sit her hot plot on. A mix of Thorax's and Shining's sperm flowed down into a puddle on the bed, a mix of white and off-green fuck juice.

Cadance kissed Thorax, suckling her husband’s foal batter from the changeling's maw. She then turned her head around, kissing Doomie even as he blew his own load. She cut off Doomie's moan with the kiss, but Doomie expelled a hot load into Shining from the other end regardless. Shining looked like he couldn't breathe, but also like he enjoyed the strange taste of what was injected.

"Oh Shining," moaned Cadance, "You make such a hot faggot. I could watch you get plowed for hours, and-"

Her words ceased as the straps on Shining's right legs gave. It sent Cadance tumbling forward atop Thorax, pulling Shining free of her. Thorax was somewhat stuck inside Shining as his knot swelled and locked, but Cadance gave him an extra shove to pop him free. It elicited yet another squeal from both Shining and Thorax, and Cadance pinned Thorax on the wet bed.

"Oh well, this works!" Cadance drooled onto Thorax's face, rubbing her well-used slit against his still creaming shaft. "I want to feel changeling dick inside me." She turned to Doomie, "Take his blindfold off and come fuck me up the plot hole."

"Wha?" Doomie asked, not that there was any point in hiding what they were now that Cadance had blurted out 'changeling dick'.

"Blindfold and gag off," Cadance repeated, "I want him to see how inadequate he is compared to these glorious, ridged beauties."

Doomie was too lost to worry about the consequences of the captain of the guard knowing he was a changeling. Thorax was even less able to worry with a sopping wet alicorn twat grinding on his goods.

Shining squeaked as Doomie tugged off his blindfold. Doomie yanked his meat popsicle back, which mercifully hadn't knotted in Shining's throat, and unstrapped the gag. He left the stallion hanging by three legs and staring.

"Surprise!" Cadance called to Shining. "Is my cock-fiend of a husband ready to see me get a proper fucking for once?"

"No reason to settle for his tiny dick when you got us!" Doomie was on board with the cuckolding.

Thorax was less certain if he should be. He didn't have much choice at this point of course, not that he wanted a choice.

Shining stared for several long moments at his wife as she straddled Thorax. Doomie moved behind her to make it an alicorn-changeling sandwich. Shining's expression seemed torn between moaning and laughter.

"Oh I'm ready," chuckled Shining, "After feeling that meat slab in my behind, can't blame you.... do I know these hotties?"

"Probably," smirked Cadance.

Thorax eased up again when it was obvious that Shining appreciated the treatment. His eyes widened as he felt Cadance slide over his fun piston, enveloped in the delightful honey pot. She squeezed hard, gliding down over each ridge with a lewd pop before finally rolling her hips.

Doomie pressed from behind, his thick goo and Shining's spit lubricating his way. He popped into Cadance's tailhole, tight pucker sliding over the unique shape of his shaft. He grasped at her hips and began to move in time with Thorax, pressing in together, swelling her belly with each thrust. Doomie and Thorax's balls smacked together with each stroke.

"I'd say to be careful and not let your balls touch," smiled Cadance, "But I guess it's too late for that in the case of you two."

Cadance began kissing Thorax repeatedly, nice deep slurps. He ran his hooves over her hot body and she did the same to him. Her wings flexed back to rub against Doomie at the same time as they all came together.

"Oh fuck yes," Cadance drooled as she kissed. "I didn't expect this treatment. Your cocks are perfect... my husband will never pleasure a mare's holes like this."

Shining watching them made it feel even better. Fucking a stallion's ass and then fucking his wife... Thorax loved this. Doomie clearly did as well, squeaking in excitement as he pounded harder. Even Shining loved it, but the poor stallion was unable to stroke himself at the moment. All he could do was stare and drool.

"Gonna start imagining it's us when you're fucking him?" Doomie grinned.

"Mmm, no way I could do that," Cadance moaned, "I couldn't even pretend that his inadequate cock is this good." She shivered lustfully and tossed Shining a grin before turning her head about to kiss Doomie. "Nothing to say over there, sweetie?"

"Mmm," Shining grunted, "Oh I'm glad you got some less disappointing dicks to enjoy... just wish that I could move enough to masturbate to all this."

Cadance's magic was a bit shaky, but she grabbed Shining's legs one at a time. Whichever restraint she grabbed bobbed in time with her body as she tried to undo it, but she managed to get them all untied.

Shining started to step toward them, only for Cadance's magic to tug him back away. He grinned and got the picture, sitting back against the head of the bed instead, splaying his legs to react as he used a hand of telekinesis to stroke.

Cadance wasn't the only one enjoying a more capable partner than usual. Thorax was getting dizzy from how amazingly she massaged her tunnel over his happy stick. It seemed to twist and convulse with each stroke, milking him better than any changeling he'd felt. Not even his mother could match this craziness.

Doomie looked to be thinking the same thing. His eyes rolled back as he gagged from the combination of pleasure and overfeeding. He blew his load first, which was quite unlike him, so this alicorn's ass must be amazing.

Thorax leaned over Cadance's shoulder to kiss Doomie. The brothers kissed as Doomie moaned, packing Cadance's behind to overflowing. It poured onto the already-drenched sheets, and Cadance's plot began to jerk with Doomie's motions. He finally had to stop thrusting as his knot locked him tightly inside her behind.

Thorax creamed so hard that for a moment he feared that he might pass out from dehydration. Was that even possible? If it was, this cunt was the one that could do it, that was for sure. Cadance arched against him as she went over too, a stream of pony goo flowing down their thighs along with his greenish spunk. His knot swelled until nothing else could escape, causing her gut to swell with the flood.

Cadance grinned widely and stroked Thorax as he came down from his sexual high, or at least tried to. Drained physically and overstuffed emotionally, he could barely move at that point.

Thorax managed to register Shining's moan beside them, and flopped in that direction. Staying connected to Cadance, he managed to open his maw to catch the stream of Shining's climax as he went over watching them. He let it stream over his face, then clamped his muzzle over the tip to guzzle down the rest of the rich spunk. Shining petted Thorax's head, though with awkward motions as if he wasn't quite comfortable touching a changeling.

"Whoa there," Shining panted, "Cum slut much? Not that I'm complaining."

"There we go," Cadance panted as well, "Aren't they just adorable, Shiney? And they must be so full..."

Cadance reached a hoof toward Shining to motion he could approach. He stumbled over the squishy bed and cuddled against all three. He lay his head on Cadance's shoulder and a foreleg hugged around each of the changelings currently tied inside her.

"So are these two 'reformed'?" asked Shining, "Or did you drag them in here by force?"

"Neither, I'm afraid," smirked Cadance, "Tell him who you are, boys."

Thorax fell silent, unsure of how Shining might react to who they are, though he was at least in a very good mood. And it wasn't like they could hide it for long.

"Uh, Gleaming Spear," admitted Doomie, "This is my um... husband, Crystal Hoof."

"And who are you when you're at home?" asked Cadance.

"Doomie," said Doomie, "And this is my brother Thorax."

"Seriously?" Shining took a while to respond, "Wait, does this mean the real Spear is locked in a pod somewhere?"

"Uh, actually no, I've sort of always been a changeling," explained Doomie.

That no doubt came as a shock to Shining since Doomie had been a 'royal guard' since almost a year before the Canterlot attack. Thorax, in contrast, had started recently. They had had a wedding and everything to make it look real.

"Are we under arrest?" asked Thorax. He was gradually returning to his senses.

"I don't know," smiled Cadance, "It would be pretty hilarious to call in the other guards while in this position... "

"I'd hate to arrest our play-buddies," chuckled Shining. "I wonder what they could do that might prevent that."

Thorax knew the two were playing him and Doomie, but didn't mind. There was no shame in getting bested by a clever and sexy opponent. And there was something he feared more than pony prison...

"Please don't tell Mom," Thorax begged quietly.

"Mom?" asked Cadance, "Are... you all literally Chryssie's children?"

"Most of us, yeah," said Doomie. He sounded like he didn't think there was anything odd about that. Because there wasn't.

"Who's the father?" Shining asked.

"Various changelings," shrugged Thorax, "Uh, I think Doomie actually put the last batch into her. If we don't count the batch you put in her, Prince."

"Sure did!" Doomie said proudly.

"How many are in my batch?" Shining sounded a bit scared.

"Dunno," admitted Thorax, "I mean she hasn't laid them yet. She can control how many she gets. Could be one, could be twenty."

"Probably on the lower end of that," Doomie suggested, "Since she did it to get to Princess Cadance more than to make more drones."

It felt weird for Doomie to refer to her like that when they were still both locked inside.

"We won't tell your mother," promised Cadance. "That is, if you do your part to get her to the diplomacy table."

"I'm not gonna’ lead her into a trap," frowned Doomie.

"It won't be a trap, I swear," Cadance said, "We really do want to talk to her... and have sex with her... but don't tell her that part. Since it's a pleasant surprise."

"You guys have studied our culture, right?" asked Shining, "You know ponies don't attack when discussing terms, even with their most hated enemy."

"And we don't hate Chryssie," said Cadance, "I don't like what she did, but I recognize that she did it to feed her subjects... her children, apparently. I can respect that; I actually think we can help you, all of you."

Thorax grunted as he shifted. His shaft popped free of Cadance with a loud squelch, followed shortly by Doomie's doing the same. Cadance purred at the friction from both, and softly rotated her hips against them still.

"I would like that," Thorax managed, "Being at peace with ponies, I mean. I... sorta like ponies. And not just because of this."

Doomie groaned a bit, but for once didn't demean Thorax outright for spouting about ponies.

"We'll... see what we can do," Doomie agreed. "Not sure how to broach the topic though... it's not easy to lie to her."

"Simply tell half the truth," suggested Cadance, "Tell them I invited you to plow my husband and me. Then during pillow-talk, we talked about how we understood Chryssie and wanted to help."

That wasn't a bad idea. It was the truth, and if Mom didn't detect a lie, she wasn't likely to dig further. Thorax would let Doomie do the talking though. Anything Thorax said about cooperating with ponies would be suspect. Chrysalis had already reprimanded Thorax several times for his strange feelings about ponies.

"So can we do this again?" asked Doomie.

"I'll put you two on the waiting list and let you know when it's your turn," Cadance placed a hoof against Thorax's nose. "For now, I'm thinking even I need some sleep."

"Can we sleep here?" asked Thorax hopefully. Cadance was soft, and he didn't want to let go of her for a few hours at least.

"Sorry boys," chuckled Cadance, "Sleepy-snuggling me is off-limits for you."

"Odd place to draw the line," Doomie commented.

"I'm an odd mare," smiled Cadance. "Don't forget to poof back to your disguise before you walk past the guards at the door."

Wow... Thorax would have forgotten again had she not said something. He was starting to think that he wasn't cut out to be a spy.

Thorax shifted back to Crystal, complete with matted fur. He looked as well-fucked as he could, both to be convincing, and as a way to silently brag to the guards at the door as he left.

Doomie did the same, and the two staggered towards the exit. Thorax glanced back once more as he opened the door, watching as Cadance and Shining curled up together. He took a deep breath, enjoying one last gulp of their intense emotion before heading out.