So I FINALLY found the inspiration to write something new. Contains kidnapping, magically-caused inflation, Chrysalis x stand-in OC sexuals, a little WG and some optional bursting (if you're in to that sort of thing).
 
>You are Silver Dash, second lieutenant of the Crystal Pony Guard.
>And tonight, you've drawn guard duty.
>Not that that was unexpected, but tonight you're protecting the Crystal Heart itself.
>It's an almost ceremonial post, which explains why you're on your own this evening.
>The Heart rests in the center of the Crystal Empire, beneath the towering castle of your homeland's rulers.
>Rings of shield spells and legions of crystal guard stand between any evildoers and your post.
>And the Heart itself is protected by a powerful shield spell cast by Prince Shining Armor himself.
>You smile as your shift begins, right as the sun begins setting over the distant mountains.
>Another quiet night to yourself.
>You nod to your fellow crystal ponies as they head home for the night.
>Your armored hooves clack lightly on the polished stone of the castle grounds.
>The Crystal Heart glows a warm pink, radiating comfort and safety from its floating pedestal.
>For the next hour, you trace a slow triangular pattern around the castle's base, scanning the nearby streets for activity.
 
>Three hours into your shift, darkness has fallen, and you're getting pretty bored.
>The streets are deserted, so you're left with only your own thoughts to pass the time.
>You're in the middle of your tenth game of mental tic-tac-toe when you hear a rustling noise behind you.
>Startled, you spin around to see...nothing.
>Crystal Heart, castle walls, deserted courtyard, all still there.
>You trot over to the other side of the courtyard and scan the darkened streets.
>The rustling noise reappears behind you AGAIN!
>It almost sounds like wings, but not like any pegasi's.
>Nervously, you step back towards the Crystal Heart's pedestal, while looking in all directions.
>You're considering running down the street to alert the nearest guard patrol when something kicks you in the back of your head.
>Even though you're wearing armor, the blow knocks you to the ground.
>Disoriented, you struggle to spin around on your hooves to face your attacker.
>Your disheveled helmet obscures your vision, but you notice a set of black hooves clopping towards you, next to the Heart's pedestal.
>They're very thin, and it looks like there's holes in them...
>That's all you see before a green light flashes and you're knocked out cold.
 
>You awaken with a splitting headache.
>Feels like your armor's been removed, and you're laying on cold, rough stone.
>You slowly open your eyes and realize that it's still dark out.
>No, wait, that's not right, it looks like you're indoors.
>The walls look like stone, and suddenly you understand you're in a cave somewhere in the mountains.
>Between the rocks are large crystals which give off a soft, bluish glow.
>You freeze when your eyes detect movement in the cave with you.
>A tall figure stands up and begins striding in your direction.
>You recognize the same holed hooves as the ones of the creature that attacked you.
>Dark flesh, a crooked horn, two insectoid wings...
>Your blood runs cold as a pair of bright green eyes stare at you out of the gloom.
"Q-Queen Chrysalis!" you cry shakily.
>The queen of the changelings' eyes glitter as she grins, her mouth full of sharp white teeth.
>"Hmm...it's good to see my reputation preceeds me."
>You feel panic rising in you as your eyes dart across the cave walls, looking for an exit.
>You stumble to your hooves to run away...but find your back left leg won't budge.
>Peering down, you realize there's some kind of bracelet attached to your ankle.
>It's smooth, black and organic-looking, with several glowing green spheres embedded in it.
>"Oh please don't try to run, my little stallion," Chrysalis intones at you.
>"That manacle is held in place by my magic. You won't be leaving this cave without my permission."
 
"So, why have you kidnapped me?" you ask, summoning a little confidence into your voice.
>Chrysalis gives you a coy glance.
>"You are the sole witness to my theft of the Crystal Heart, little guard. I wouldn't want you telling those ponies who you saw last night, would I? And besides..."
>The changeling reaches a holed hoof forwards and touches your chin.
>"...I've never fed on crystal ponies, or their magic, before. It would be wise of me to keep you around for...experimentation." She gives you another sly grin.
>You shy away from her touch.
>"Without us crystal ponies, the Heart has no power. And we will never serve you!" you state bravely.
>Chrysalis smirks. "Your ignorance of your own kind is amusing. The Heart absorbs and stores magical power from your kingdom, even in your absence."
>Her horn glows and she levitates the stolen Crystal Heart towards you, its' facets brightening up the gloomy cave.
>"In this Heart is all the love and friendship of the Crystal Empire. Love and friendship that I will feed upon!"
>The changeling grins wickedly. "And you, little pony, will bear witness as I use your Kingdom's power to RULE EQUESTRIA!!"
 
>You look on in despair as sickly green magic wisps out of Chrysalis' horn, enveloping the Crystal Heart.
>The Heart is tinged green as it hovers before her.
>The queen opens her mouth wide, as if to devour the crystal whole...
>And nothing happens. After a few moments, Chrysalis drops the spell and stares at the Heart quizzically.
>Again, she casts her evil spell on the Heart, and again nothing happens.
>No blast of magic, no flow of love, nothing.
>After a third time you see anger creep into the changeling's face.
>Relief washes over you as you realize she can't feed on the precious crystal.
>You remember Prince Shining Armor casting many protective spells after the defeat of King Sombra.
>He must have enchanted it to protect it from Chrysalis, as well!
"You'll never feed on our Heart, changeling!" you shout at her bravely.
>"NO MAGIC CAN WITHSTAND MY POWER!" she thunders. "TELL ME HOW TO BREAK THIS ENCHANTMENT!!"
>Your courage falters.
"I-I don't know. The spell was prepared by-"
>"HMPH!" The queen snubs her nose at your response, cutting you off. "Of course, that weakling Prince of yours. I should have recognized his shield earlier."
>The queen returns to sitting next to the Heart, frowning as she contemplates it intently.
>You continue to look for a way out, but the magical binding on your leg keeps you stuck in your corner of the cave.
>After several minutes of thought, Chrysalis rises and begins charging a spell.
>Her horn glows a dark, sickly green, energy sparking and cascading around it.
>Chrysalis' face is scrunched in concentration; suddenly she rears back and fires the spell.
>A massive torrent of green fire blasts the Crystal Heart.
>You struggle against your restraints, fearful of the waves of heat and energy.
>The blast stops, leaving a haze of dust in the air.
>Chrysalis slowly trots forwart to where the Heart lay.
>The dust clears and to your horror you realize that the Crystal Heart is no more.
>The changeling's spell has shattered the center of your race's power into a handful of crystalline shards.
>Chrysalis grins, then throws her head back to utter a wicked laugh.
 
>You feel utterly dejected as the queen stands over the shattered remains of the Crystal Heart.
>She begins casting her absorbtion spell once again on the crystal shards.
>Yet her good mood does not last, as the shards remain on the cave floor, inert.
>Chrysalis is fuming, sitting on her haunches staring at the glittering fragments of crystal before her.
>Your eyes dart nervously from her, to the Heart, to the rest of the cave.
>What's going to happen to you when the Queen realizes her plan has failed?
>Chrysalis' eyes dart left to right, as she appears deep in thought.
>Suddenly she looks up at you, and her eyes narrow.
>You tense in fear as her horn lights up, expecting to get zapped into oblivion.
>But after a few moments you open your eyes to see Chrysalis levitating the remains of the Crystal Heart before her.
>She brings them closer together, towards her head. Her mouth opens.
>Then with a final glance at you, she tosses the shards...into her open maw.
>Your jaw drops as the changeling queen fits all the bits of the Heart into her mouth, then swallows them, tracing a lump with her hoof as they travel down her throat into her middle.
 
>"YOU ATE THE CRYSTAL HEART?!"
>Chrysalis glances at you smugly.
>"Changelings feed on love, my little guard. My body will absorb what my magic cannot."
>She grins, then lets loose an evil laugh.
>"And with the power of the Crystal Heart, I won't even need an army to rule Equestria!"
>You struggle to shy away as she drags you forward with her magic, then boops your nose with a holed hoof.
>"And all your precious crystal pony magic...will be MINE."
>Her magic levitates you back to your spot against the cave wall.
>Chrysalis begins scheming quietly to herself, a smile of wicked satisfaction still on her face.
>"Hmm...no drones to cause a distraction...will have to ambush them myself..."
>After a few minutes, a rumbling, growling noise interrupts her plotting.
>Chrysalis tentatively places a hoof to her middle.
>You realize the noises are coming from her growling stomach.
>Her eyes light up and she opens her mouth excitedly.
>"Yes...it's working! I can feel the power of the Heart inside me..."
>The green bands on the changeling's abdomen begin to glow a sickly green.
>"Oh yes...so much magic...so much love...oooooooh..."
>Queen Chrysalis' eyelids flutter; her eyes dilate and her breathing becomes heavy.
>"Mmmmm...power...delicious...ooooOOahoOh-"
>You watch as Chrysalis' stomach begins to slowly bloat outwards.
>Her rail-thin middle begins swelling out around her glowing bands.
>The changeling seems enraptured with the feeling of the Crystal Heart digesting within her.
>She sits there panting, eyes half-lidded, with a look of bliss and what you think is arousal.
>Her growling middle slowly stops growing...then suddenly surges outwards, belly bands glowing brightly.
>"MMPHH!!" Chrysalis cries through a closed maw as she jerks her head upward.
>She puts a hoof to her middle, finally noticing her swollen, glowing belly.
>>The queen gasps, then lets loose a low moan as another surge bloats her gut outwards another inch.
>She draws heavy breaths while bringing up both hooves to tenderly poke and massage her basketball of a belly.
>Every few moments her green middle glows a little brighter, and her gut swells out a little more.
 
>You're watching this spectacle from a few feet away, frozen in shock.
>Your dry mouth is hanging open in astonishment.
>This is NOT what you expected to happen next.
>Suddenly you're aware of a familiar warmth spreading through your lower body.
>Chrysalis is gasping for breath between moans, her back hooves twitching on the cave floor.
>Her beach ball of a middle groans and gurgles as it bloats out in front of her.
>You blush profusely upon realizing how aroused you are, staring at one of Equestria's most infamous villains.
>Though you'd be surprised to find a stallion not aroused by all the noise Chrysalis is making.
>You can almost hear her flesh stretching as her gut continues to expand.
>The changeling queen is lolling her head about, her eyes unfocused and her mouth open and panting.
>Her swelling middle is forcing her stance wider and wider, so she slouches backwards, her hooves behind her back.
>You shift you hooves to hide your rigid boner as Chrysalis' round, bloated tummy stretches towards you.
>Through the translucent bands of her abdomen you can see a glowing green slurry churning within her body.
>Her limbs are quivering and fidgeting as she continues to expand.
 
>Suddenly, Chrysalis loses her balance and falls backwards with a heavy grunt.
>Her body slowly pulls her liquid-bloated belly back on top of her.
>The changeling's back hooves flail in the air towards you.
>You catch a glimpse of something wet and glistening between them.
>Chrysalis' sloshy belly pulls her body right, then left onto her side.
>The changeling, still within the throes of whatever the Heart is doing to her, tries to pull her front end towards you.
>A new spasm of swelling and she abandons her efforts.
>Chrysalis appears drunk with pleasure, her eyes half-lidded and unfocused, her limbs splayed out to her sides.
>After another minute, the Queen's belly finally stops swelling.
>"Oooohh...sso delicious..." Chrysalis slurs as she lies on the cold stone floor.
>Her enormous belly swells towards you, a massive squashed sphere of black and glowing green flesh.
 
>"G-guard..." Chrysalis cries weakly at you.
>You finally take your eyes off her jiggling gut and meet her eyes.
>The queen's mane is a disheveled mess and her face is damp with sweat.
>Her breathing slows as she eyes you over and cracks another grin at you.
>"This was...unexpected. And...not exactly...unwelcome."
>Her eyelids flutter as her back leg twitches.
>"But...there is...one other thing I will need," she says, her eyes narrowing.
>You blush and nervously hide your boner behind your hooves.
>"Oh, don't try and hide it...I am a changeling. I can feel your lust from here."
>Your blushing intensifies and you begin searching for the words to profusely deny it.
>Chrysalis grunts as she shuffles her hooves in an attempt to stand up.
>Her back legs struggle to find a footing, squishing deeply into her massive gut.
>The changeling kicks off with her hooves and rolls sideways onto all fours.
>Her middle sloshes and wobbles, her body rocking back and forth
>Chrysalis glances back nervously as she realizes her legs can barely touch the floor.
>Her breathing slows as she comes to balance herself, laying on her belly like a giant beanbag chair.
 
>The changeling queen returns her gaze to you.
>"What do you say, my little stallion? Care to have a little fun with me?"
>She gives you a sultry smile and raises her rear leg, stroking the side of her belly idly with a hoof while giving you a better view of her rear.
>"You don't have much of a choice," she says, her eyes narrowing.
>"I can take my pleasure from you by force...but it would be exceedingly easier if you cooperate."
 
>You're sitting in frozen in place on the cave floor, nervously biting your lip, your heart beating fast.
>On the one hoof, a love-swollen changeling queen is demanding that you fuck her.
>On the other hoof, you're compounding your failure to guard the Crystal Heart with willingly fraternizing with one of Equestria's greatest enemies.
>You hem and haw internally, rocking back and forth and still wishing desperately that her bloated display didn't continue to arouse you so much.
>Chrysalis finally rolls her eyes, her crooked horn glowing.
>"Oh for bug's sake, get over here and rut me before you cum on the floor. Honestly, if it wasn't for this gut you'd already be tied up and thrusting."
>Her levitation magic drags you forward until you're directly behind her.
 
>The queen's legs are stretched wide to accommodate her middle.
>Her modest rear is spread due to her wide stance, giving you an obvious view of her marehood.
Chrysalis is obviously enjoying herself; her sex is slick and glistens with arousal.
>You're nervously relieved there's no sign of teeth or claws back there, like the guards back at the barracks assured you there would be.
>A gurgle from her massive belly causes her legs to twitch, and her wet vagina to wink.
>Your cock twitches in response.
>You reach out a hoof to poke the underside of the queen's gut.
>Her black flesh is warm and leathery, and your hoof sinks in a bit before meeting resistance.
>Chrysalis' body wriggles in response to your touch, and you hear an impatient sigh from up front.
>"Get on with it, pony! I am in NO mood for teasing!"
>You hurriedly shift your attention back to the changeling's waiting marehood.
>You stand up on two legs, cautiously placing your front hooves on her thighs.
>Then you groan to yourself as you realize the belly-bound queen is too tall for you to mount.
>Her ready sex is just below eye level, well out of reach of your straining member.
>You're going to have to do some climbing if you want to keep her happy.
 
>You grip the queen's hips and cautiously start pulling yourself up.
>The changeling wriggles and as your back hooves press into her swollen gut.
>"Aaaah...careful, peasant!" she cries as you scramble to find a footing.
>Chrysalis shudders as your horsecock pokes the underside of her belly.
>Finally you're in position atop her rear.
>You can feel the changeling's belly compress as it bears your weight.
>Your waiting, painfully erect cock is pressed against her wet, hot sex.
>Chrysalis cranes her neck back to eye you, breathing heavily.
>"Rut me, pony. Give me your seed...give me your love!" she demands in a low voice.
 
>Throwing hesitation aside, you pull your hips back, then thrust into her sex.
>A twinge of pleasure hits you as your cock slides between the smooth, warm lips of her marehood.
>You gasp along with Chrysalis as you push yourself into her.
>She's very warm and very tight, not as unexpected for a creature so slim, yet currently gorged on the magical energy of the Crystal Heart.
>You squeeze yourself further and further in before finally hilting inside her.
>You can feel the changeling's stuffed stomach pushing on her muscles as they squeeze your dick.
>Slowly you pull yourself out of her, spurts of juices leaking from around your cock.
 
>Suddenly Chrysalis bucks forward, shifting you off balance.
>Your hooves grasp frantically at her bloated body even as you thrust yourself back into her.
>You end up gripping the base of her wings and the irridescent chitin on her back, as you entwine your back legs with hers.
>Your grip tightened, you hungrily thrust back into her waiting sex.
>This time her entire body sloshes forward as she winks around your horsecock.
>You moan as her muscles squeeze and pull your member further inside her.
 
>You pull out, then thrust in again, then again, and again, each time a little faster.
>It takes a strong effort to force youself in and out of her narrow marehood.
>Your cock is painfully hard and drenched in her juices.
>Each time you hilt, her muscles squeeze and fondle you.
>And every moment you can feel her massive belly, rocking and wiggling and cushioning your desperate lovemaking.
 
>Your mouth is parched; you're panting and sweating buckets.
>Chrysalis' body sloshes back and forth with each of your heavy thrusts.
>Every muscle of yours is burning as you struggle to keep your balance and grip, while frantically trying to fuck her harder.
>The changeling queen herself is gasping and moaning, her forehooves and chest forced to the floor by the momentum of her belly.
>Finally you can take no more.
>With a loud cry, you climax hard.
>You can feel your cock spasm and start pumping your seed into the bloated changeling queen.
>Chrysalis lets loose her own moaning cry, and you feel her vaginal muscles contracting and milking your horsecock.
>Spurts of fluid leak from her marehood as she comes with you.
>You buck hard, and the momentum keeps sloshing her body forwards and backwards.
>You surrender yourself to the intense pleasure as every drop of cum is squeezed out of you.
 
<break>
 
***************************************************
ENDING 1: IN WHICH NOTHING PARTICULARLY BAD HAPPENS
***************************************************
 
>You're left breathless and shivering as you recover from orgasm.
>Chrysalis' vagina slowly loosens its grip on your thoroughly spent horsecock.
>Your sweaty body clings to the slick skin of her back and rear.
>Your ear to her back, you can hear a faint gurgling and sloshing from inside her belly.
>Suddenly you're jolted up as the changeling bucks you off her.
>You fall backward and land in an unceremonious heap on the cold cave floor.
>Dull pain hits your senses as you bruise your rear and elbows on the hard stone.
>You raise your head, dizzy, to gaze upon your former partner.
 
>Chrysalis is looking back on her body, back hoof raised, inspecting herself.
>A trail of fluids still leaks out of her marehood to a puddle on the ground.
>The green bands of her belly are glowing intensely.
>You notice movement and suddenly realize that her massive belly is slowly growing smaller.
>Chrysalis smiles approvingly as her spherical gut begins to recede in width.
>Within a few moments, her belly has lifted off the floor, and she's able to stand on all four hooves.
>"Much better," she purrs with relief.
 
>"Wha...what happened..." you mumble groggily.
>The queen looks across at you smugly.
>"I feed on love, my little guard," she replies, "but never before have I fed on a relic like the Crystal Heart."
>"It appears my body would not digest the Heart's fragments right away..."
>"Good thing I kept you around," Chrysalis grins, staring at your flaccid horsecock.
>"As I suspected, the seed of a crystal stallion, given willingly, was enough to acclimate my body to your love."
>You blush again in uncomfortable embarrasment, trying to hide your modesty with your hooves.
 
>Chrysalis begins slowly strutting around the cave.
>Her belly has now retreated into a generous sphere that hangs heavily to her knees.
>It jostles and sloshes with her sauntering strides.
>You notice that her chest and neck look a bit thicker, and her ass is decidedly rounder than before.
>The heavier queen gazes at the cave entrance in thought, before turning back to you.
>Her large green eyes soften and she gives you a smug, predatory smile.
>"Well I suppose I should thank you, guard, for your assistance. And for being so adequately endowed," she remarks with a smirk.
>"And now that you have helped me absorb the Crystal Heart's power, there is NOTHING that can stop me from conquering the Crystal Empire!"
>You jolt up, panic rising in your system as you realize what you've done.
>Chrysalis' horn powers up, crackling intensely with powerful green magic.
>"Don't worry, Silver Dash, I won't tell your fellow ponies of your...assistance."
>"But I can't allow you to leave," she states, turning her horn on you.
>"I'll be sure to send for you, once I've conquered and enslaved your kingdom"
>Chrysalis cackles evilly as she knocks you unconscious with a flare of green magic.
 
***************************
ENDING 2: CONTAINS BURSTING
***************************
 
>Suddenly you hear a low, gurgling GROWWWWWL from below you.
>The body you're still thrusting into starts quivering.
>You open your eyes amidst the throes of your orgasm to see Chrysalis' wings and back chitin twitching.
>Chrysalis' vagina is still contracting around your rigid cock.
>You feel yourself slowly being lifted up within the cave.
>You look around to realize that the changeling queen's belly is growing again.
>She seems blissfully unaware, her eyes still closed as she basks in orgasm.
>You shift your hooves, trying to push yourself away from the expanding bug.
>But it's no use; her villainous vagina is still tightly grasping your member.
 
>You whine in dismay, your body smacking back into the queens' expanding flesh.
>Chrysalis' eyes open wide in alarm.
>Her neck cranes around as she looks at her flanks, then locks an eye with you.
>"What have you-" her words are cut off as her cheeks bulge and she clamps her mouth shut, like she's trying to swallow something.
>Her eyes look about in confusion, then alarm.
>Chrysalis' legs scramble as she tries to push herself upright, but her massive gut keeps her rooted to the floor.
>All she can do is flail feebly as her body bloats around her.
>You're holding on for dear life as well, staring in fear at the mass of flesh expanding around you.
 
>The base of Chrysalis' neck widens as it slowly merges with her growing middle.
>The queen's chin plumpens as her cheeks swell round.
>Something green and slimy is leaking from her tightly closed mouth.
>Her wide eyes dart around frantically, even after her head and limbs are frozen in fear.
>Chrysalis' belly continues to bloat out wider, higher, rounder, heavier...
>You moan as you feel the bug's vagina contracting tighter and tighter, her overflowing gut squeezing her and your organs together in a death grip.
>Her skin feels more and more taut beneath your hooves.
>You sweat nervously as more creaking and gurgling noises emanate from within Chrysalis' body.
>The changeling queen's spherical gut swells around you in all directions.
>Her limbs press against her taut form, hopelessly out of reach of the floor below.
>You can glimpse bubbles of green goo seeping out of the holes in her hooves.
>The bands on Chrysalis' belly each bloat tautly outwards, glowing brightly as her green gut churns within.
>You can feel no resistance in the queen's flesh; her skin is stretched completely taut.
>Her belly creaks and groans loudly as her body runs out of room to expand.
>The queen's head is barely visible beyond the swell of her back.
>She cranes her head slowly backward to look at you.
>The changeling struggles to form words through her bloated cheeks, rivulets of green sap leaking from her mouth.
>"Tooh...mushh...loovhe!!" are the last words Queen Chrysalis is able to speak.
>The overbloated changeling bursts apart with a massive, pulpy SMACK.
>You are tossed upwards as a tide of green goo blasts you across the cave.
 
>You land hard on the stone floor, then are bombarded by a wave of viscous goop.
>Slowly you pull yourself upwards, wiping the stuff off your face.
>Nothing remains of Queen Chrysalis except a puddle of shimmering changeling goo in front of you.
>She exploded with such force that the cave walls were flecked with green droplets.
>You inch closer to the puddle, wincing as your tender cock brushes against your body.
>With rising dread you survey the puddle, looking for any trace of the Crystal Heart.
>Nothing remains except scraps of flesh and chitin.
>Dejectedly, you slump down, sitting amidst the remains of the villain you just rutted into oblivion.
>How in the hell are you gonna explain THIS one to your commander?!