Growing in Love

My head rising over the treetops, I saw Ponyville as it usually is in early evening. A few ponies made their way from here to there, or lounged about in the pleasantly mild weather. None of them had noticed me and White Heart yet, but it was only a matter of time.

“Oh dear,” I whispered, “Everyone’s going to see us…” I heard my own voice quavering, not just from nervousness but from my ongoing orgasm. I had already known that White Heart’s magic had a way of extending climaxes; when he enlarged his cock in the past, it would cum for minutes at a time. And when it was inside me, it shared that magic with my body, making my orgasm last just as long.

But this was something new. Endless growth, it seemed, meant an endless orgasm for both of us. White Heart’s body would never run out of cum, not as long as his balls kept getting bigger. And with his cock stretching my marehood, pumping an endless load into me, it looked like I was going to be coming for just as long.

It wasn’t easy to speak - or even to think - with climax shooting all along the wide curves of my swelling body. I could have let myself sink completely into the feeling, riding each crashing wave along with White Heart. But the presence of Ponyville - and hundreds of ponies who would soon notice my cum-bloated body - forced me to stay alert.

“There’s nothing we can do about it, Flutters,” said White Heart. “They’re going to see us. But it it makes you feel any better, you’ve never looked more beautiful.”

That did make me feel better. When White Heart tells me I’m beautiful, I can tell he means it. But even if I did look beautiful, that didn’t stop me from feeling exposed. Each time my belly swelled with a fresh gush of cum, my breasts grew along with them, keeping pace with the growth. And now that I was past thirty feet tall, my bare breasts were bigger than any pony. Big enough that just one of them would barely have fit inside the bathroom that we had broken open.

Carrying around big breasts had been embarrassing enough back when they’d been their usual size… and when I’d had a shirt to put over them. Now they were growing bigger every second, with nipples bigger than my head. Would ponies stare at my breasts? Would they touch them? The thought made my marehood pulse with heat, and the next rising wave of orgasm made me cry out as the sensation coursed through the sensitive skin of my expanding boobs.

My head remained in more or less the same spot as my body expanded; I was just rising upward as my belly lifted me higher. But as my belly grew upward, it also grew forward. My sloshing, blobby yellow tummy lurched forward across the path that led from my house to ponyville proper, flattening the trees on either side as it grew rounder and wider.

I could hear a series of dry cracking sounds from behind me, and it took me a moment to guess its source: it was White Heart’s balls, equal in size to my breasts, reaching the edge of the Everfree Forest. His quivering, endlessly full nuts were overtaking the wild woods, crushing the gnarled trees to splinters. I have mixed feelings about the Everfree; it’s home to many fascinating natural specimens, but they’re all rather unfriendly…

But when I heard my special somepony’s big white balls crushing the Everfree underneath, I didn’t have such mixed feelings. I was in awe of the power of his magic - and of his body. His balls were like boulders rolling over the fragile forest, and that display of power was incidental to their real purpose: to churn up an endless supply of warm, thick cum to fill me, to grow me bigger.

And Ponyville was starting to take notice of my size. Down the hill, among the outskirts of town, I could see ponies pointing fingers and starting to flee. I imagine they didn’t even know what they were looking at; the bright yellow of my fur would be familiar to them, but not when it was stretched across a belly some fifty feet tall. Even if they made out the shape of my enormous yellow breasts, wobbling with each wave of orgasm, I imagine most of them didn’t realize they were seeing little old Fluttershy. And even if they did, would they have guessed that they were seeing an act of love? Would they have guessed that it was White Heart’s huge, powerful balls and his big thick cock that were making me grow?

The surges of growth came in a relatively steady rhythm, but each one was bigger than the last. My belly, crawling towards Ponyville, overtook three feet of land in one surge… then five feet… then ten. And in no time at all, my big yellow tummy was pressing up against the nearest home in town. For a moment, I felt my soft, bloated belly deforming around the structure - but the weight of my body was too much for the little house, and it crumbled underneath as I expanded.

“Oh dear,” I said, “I hope everyone will be okay… we’re going to crush everything, White Heart. We’re going to outgrow the whole town…”

“There’s no stopping it now, Flutters,” said White Heart. “There’s nothing we can do but enjoy each other…” he moaned as his cock throbbed and shot its load inside of me. “Oh, Fluttershy, it feels so incredible to be big inside you… I can feel your pussy growing all around me…”

“Mmm, it’s wonderful to have you inside me,” I agreed. “I always loved to watch you grow… and feel you grow… and now I get to have that feeling forever. Whatever happens to the rest of the world… we have each other.”

Down at ground level, Ponyville seemed to be treating my encroaching belly like any other disaster: by calling on Twilight. She came charging out of her castle, ready to face the “threat” head on… but it looked like she hadn’t anticipated how much my growth was accelerating. First she was charging at me… then she was backing up… then sprinting away, casting the occasional look behind her. I called down to her, trying to keep my voice calm and steady - but I was hundreds of feet up now, with no hope of my voice reaching her. Just before my body overtook her, I saw her horn beginning to glow, and a warm tingle flowed through my body. It wasn’t sexual - it was the feeling of being enchanted.

I couldn’t tell what Twilight was trying to do with her magic. But whatever it was, she didn’t get a second chance at it; my body was expanding quicker than she could run, and it rolled over her, knocking her flat before the swelling yellow flesh covered her completely. I could feel her squirming under there, but the weight of my body didn’t seem to be hurting her… maybe that’s what the enchantment was doing? That was a nice thought. I was still crushing Ponyville’s buildings underneath my growing body, overtaking another building each time White Heart came inside me, but it would be nice if I wasn’t actually hurting any ponies.

There were only a few hundred yards of Ponyville left to conquer with my growing body, and I found myself excited by the idea. We weren't just growing, we were outgrowing everything around us. First the shower, then our house, and now Ponyville. Not to mention that White Heart’s balls were well on their way to crushing the whole Everfree forest.

I've never had what you might call an appetite for destruction, but I was starting to become addicted to the feeling. My body was becoming so powerful that nothing could contain it, and the feeling of a wall briefly resisting my growth, pushing back against my soft, squishy tummy until it finally crumbled… that feeling was almost orgasmic by itself.

So, eager to grow faster, I clenched the muscles of my marehood around White Heart’s shaft, trying to coax a bigger load from his enormous nuts. I could feel every inch of his cock inside me - and by this point, it stretched all the way from the site of our demolished house to the center of Ponyville. The tip of his dick was as wide as Applejack's barn - and I knew this for sure because when I cleaned my marebits down on his cock, he began to thrust. His hips were normal-sized, but they still had the power to move his immense cock in and out of me… and when he thrust all the way forward, I could see the outline of his thick, bulbous tip through the surface of my skin.

As I looked down at myself, admiring the size of my special somepony’s stallionhood, I saw the skin of my tummy distend a little further. Cum was flowing from his tip, pouring out of him, shooting like a geyser- and with my pussy closed tight around his cock, I could feel the strong, rumbling flow of thick warm cum through his quivering shaft.

His outpouring of cum spurred my own endless orgasm, triggering a series of throbbing pulses so intense that they drove all conscious thought from my mind. I couldn't think of Twilight, still squirming beneath me. I couldn't speculate about how much bigger we would get and what else would get crushed underneath our bodies. I just closed my eyes, curled my toes, and felt the climax ripple through my enormous body in rolling waves. Every square inch of my giant yellow tummy shivered with ecstasy - and as my body shook, my tits began to wobble with enough force to shake the ground beneath me. My swollen yellow boobs slapped against the top of my belly, making the soft, bloated flesh ripple and slosh as it overtook more and more of Ponyville.

“Oh…” groaned White Heart, wrapping his arms around my shoulders. “There’s so much, Fluttershy... I can’t stop…” He reached his hand forward and ran his fingers over the top of my right breast, stroking the soft yellow fur. “Flutters, you’re so big… you’re so beautiful like this… I just want to make you bigger…”

“Mmm, I can tell how much you want it,” I whispered. I felt a prickle under my belly, and I realized I had grown over Twilight’s castle. It was all sharp crystal edges, but it didn’t hurt; I suppose there wasn’t much in Equestria that could hurt me now.

“Fluttershy,” White Heart moaned, “Mnngh… oh, you’ve never been more gorgeous than you are now. Soon you’ll be a big, beautiful mountain… with all my love inside you… and more on the way…” He squeezed the flesh of my breast. “You’re the biggest, most beautiful mare in Equestria, Flutters… you’re bigger than Ponyville now… and Canterlot’s getting closer…”

“I can see it,” I groaned, feeling another wave of climax rise up inside me. “I can see it!” I couldn’t control the volume of my voice now; everything that came up from my lungs was an impassioned cry. “I’m going to grow until my big soft tits touch the tops of Canterlot Castle! And… until my belly rolls over the city… just like it rolled over Ponyville! Just keep coming, White Heart, please don’t ever stop coming… I need your love, I need it thick and hot in my pussy, I need it forever, forever and ever...”

“I won’t,” said White Heart. “I can’t! My cock is so big, I don’t think anyone could stop it… it feels like there’s a dam bursting inside me, over and over… and no matter how much I cum, my balls are always full… they’re so full, Fluttershy, they’re so full of cum, and I want to give it all to you. I’ll never stop giving you my cum, Fluttershy. I’ll make love to you forever… I can’t ever stop…”

White Heart’s cock pumped another load deep into my marehood. He was unloading entire lakes worth of cum at a time, swelling my belly and my tits, making my body grow and flow across the rolling hills between Ponyville and Canterlot.

“White Heart,” I said, finding myself in a period of calm between climaxes. “I’m so jealous of you… you can see me, but… since you’re behind me, I can’t see your strong, handsome body so well…” I turned my head, trying to see as much of my special somepony as I could. I could see his lovely face, and the top of his powerful chest - and behind him, stretching out just as far as my belly and my tits, was his big, handsome ballsack. It looked like two huge, rolling white hills, twitching with each intense pump of cum.

“Tell me,” I begged, “Tell me what those, big, full balls are feeling, White Heart. How much have they grown? Have they rolled over the whole Everfree yet?”

“I don’t think so,” said White Heart. “It’s a big forest… and… oooh… even though the trees feel so small now… I think there’s some more acres left to cover. And… I think my balls crushed a castle at some point... “

“The princesses’ old castle,” I said. “And… it just so happens their new castle is quite close now…” Far ahead of me, past the wide round hills of my boobs, I could see Canterlot Castle. Even though my body was growing closer to the royal city, my eyes were still above the former site of my house - and so I could barely see the city I was about to crush. I was growing quickly, but the ponies of the city must have noticed me at least a few minutes ago. Were they fleeing? Mounting a counterattack?

Whatever was going on in the city, I knew it wouldn’t stop me from growing. The love that White Heart and I were sharing was so good, so wonderful, so powerful, that I knew nothing could stop it. I knew that friendship and love were strong, but what White Heart and I had was beyond that. It was everything good about friendship, but more intimate, more physical. More fleshy and thick and hot and intense. No princess could stand in the way of this. Of us.

With a surge of cum, White Heart bloated my body until it bumped up against the base of Canterlot. The royal city is cantilevered off a tall hillside, higher up than most ponies realize - and it happened to be at just the right altitude that my belly could slip underneath it and my breasts could embrace it from either side. “Ohhh,” I moaned, “White Heart, I can feel Canterlot between my tits… it tickles…” As more cum flowed into me, I watched the city sink into my cleavage, disappearing into the deep yellow canyon. The tall towers of Canterlot Castle tickled the sensitive skin - and there may have been some ponies squirming and struggling as my breasts enveloped the city. By this point, I was too big to tell.

White Heart thrust inside me, moving his cock with enough force to make my whole body shake. My tits, still holding Canterlot between them, began to shake - and I felt the castle’s towers rumbling and collapsing between my breasts. “White Heart,” I groaned, “we’re breaking Canterlot, I can feel it… oh White Heart, we’re too big for this world… we’re going to outgrow everything, aren’t we?”

“We are,” said White Heart. “We’re growing faster… we’re going to grow past the sky… past the moon… I don’t know what’ll happen to us…”

“I trust you,” I groaned. “Your magic will keep us safe… and make us bigger, forever…” He came inside me again, and I felt Canterlot snap off from its base as my belly lifted it up. It was lost between my breasts, disappearing into my cleavage. Maybe it would stay there forever.

Each burst of cum was bigger than the last - and at this scale, that meant I was covering entire square miles at a time. Once my body grew over the mountains beside Canterlot, I couldn’t see anything in front of me but myself - just a horizon of soft yellow, wobbling gently with each pulse of orgasm. Beneath me, there were trees and rivers - and ponies - but the more I grew, the less I cared about Equestria. It was so small, and getting smaller by the second… but White Heart and I were big, and getting bigger. At this rate, it wouldn’t be long until my sloshing, cum-swollen belly was bigger than the whole world. My tits, bigger than the moon.

And White Heart would be right there with me, just as big, fucking me, filling me, with a cock that even now was miles long. I looked back, and past his moaning face and his golden hair I saw his ballsack, every bit as massive as my belly, dominating the landscape. There were mountains in that direction, I knew; I saw them out my kitchen window every morning. But now all I could see was my special somepony’s big fat balls, those wonderful white globes that would feed my pussy with oceans of cum.

White Heart opened his eyes and saw me staring back at his mountain-sized nuts. “They’re big, aren’t they,” he groaned, giving me a smile. “I know you liked stroking them… licking them… and now they’re bigger than ever, but they’re so far away…”

“It’s okay,” I said. “I like looking at them too… and I know that all the cum inside them is going right inside me… Oh White Heart, I’m so full but all I want is to be bigger…”

“I’m full too,” said White Heart. “No matter how much I cum, those big balls are just so achingly full… and I want to give it all to you…” he leaned forward, and our mouths met again. It was an awkward angle to be kissing at, but feeling his lips on mine and his tongue in my mouth was just as good as always. Better, in fact, with miles of thick, hard cock filling me up.

We went on kissing, moaning into each other’s mouths as we grew. The geographical features of Equestria felt smaller and smaller as my body expanded; at some point I felt dry earth under my belly, and then a few surges of growth later, I felt a cold wind making my nipples stiffen. That must have been the Crystal Empire - but it gave me nothing more than a brief shiver before it was completely underneath me.

And with spurts of cum that could have filled oceans, I grew past parts of the world that I’d never been to. I grew over lands I knew nothing about, I grew over oceans, I covered nameless islands with my expanding belly. And eventually, although my body was heavy with White Heart’s cum, I felt a strange feeling of weightlessness come over me.

I pulled back from the kiss. “White Heart,” I said, “I feel like I’m floating…”

“Me too,” said White Heart. “I think we’re getting so big now… the world can’t hold us down anymore…”

“I always feel like that when I’m with you.”

White Heart laughed. “I meant gravity. We’re so big that we’ll be like our own planets soon. We’ll float off… and leave Equestria behind…”

“As long as we’re together,” I said. “I’m going to miss Equestria… all my friends… all the animals… but being with you means more to me than all that. Besides,” I chuckled, “it’s not like I had much of a future taking care of animals, with a body this big…”

“They’ll be okay,” said White Heart. “Equestria will be okay without the two of us. We’re destined for bigger things, my love… and the more I fill you, the quicker we’ll lift off…”

He thrust his hips, going at me with all his strength. I usually had to beg him to fuck me this hard - on the nights when I was in the mood for it, that is - but now pure determination was driving his cock into me. And the force his thrust was multiplied ten thousand times over by the size of his cock. If it wasn’t inside me, his penis could have reached up from Equestria and knocked the moon out of its path. It could have flattened mountains. And all that mass was rock hard and hammering deep inside me - but my pussy could take all of it and still beg for more. After every thrust, my body wanted the same thing, only bigger and harder… and each time, he gave it to me.

As my special somepony railed me from behind, I felt us at last lifting off the planet, leaving Equestria behind. Saltwater dripped from the underside of my bloated belly, where I had dipped into the oceans - and then I wasn’t touching the world at all.

Of course, I still couldn’t see below me. There was too much me in the way; my breasts stretched out almost farther than I could see. I wanted one last look at the world I was leaving behind, but if I couldn’t have that… at least I had immeasurable volumes of cum pouring into me, and an orgasm that was neverending. And ahead of me was just space, a dark expanse speckled with beautiful white stars. I was used to thinking of this view as “the night sky”... but now it was my new world. I was a planetary body now, drifting along with my special somepony.

And just when I felt like I was getting accustomed to all these feelings - the size of my body, the sensation of floating, and the endless, throbbing release in my marehood… something changed. I barely know how to describe it, except to say that I felt like light was filling my body. Filling my belly, swelling my tits, flowing through my veins… and focusing at the crown of my head.

“White heart, something’s happening…” I groaned.

“I feel it too,” said White Heart. “My back is tingling… it’s like magic, but… different… more magical…”

“Like magic, but more magical” was actually a fairly good description of what the feeling was like. I felt the power centering on the crown of my head… then extending up and out, spiraling to a point.

“Fluttershy,” moaned White Heart, “I think I just grew wings…”

“Me too,” I said. “Uh, I mean... “ I put my hand to my forehead and almost poked my hand on a long horn. “I think… I also became an alicorn.”

“That’s wonderful, Flutters,” said White Heart. “I suppose a pony can only hold so much power inside her before she… ascends.”

“Do you suppose we’re bigger than the whole world now?” I asked.

“I don’t know,” said White Heart. “Let me make sure…” He thrust quickly, his balls wobbling in the weightless abyss, and a thick, powerful flow of cum burst inside me. I grew again, and while I still couldn’t see the world, I felt certain that I’d outgrown it. As we drifted, we slowly turned - and then I got my last look at the world. The blue ball looked so terribly small and fragile from here - partly due to how far away we’d drifted, and partly due to how big we’d become. I gave the world a little wave, and then we turned away again.

After that I started to lose track of time. There was no sun or moon to mark its passage, just the long, powerful thrusts of White Heart’s cock inside me. But I was still amazed by how quickly the two of us grew. I learned in school that the nearest planet was millions of miles away, but each splashing, crashing wave of cum made my body close more and more of the distance. In what felt like an hour, my left breast bumped against the little orange planet, bouncing it aside. Whatever its usual course through space, my body knocked it out of its path, maybe forever.

And in time, the stars didn’t seem so far apart. White Heart told me that a star bumped into his nutsack - but the way he said it suggested that it didn’t hurt. The heat of a star was no much for our magic, and our size - just like the cold of outer space didn’t bother us. And eventually we could see the shape of the galaxy all around us, swirling stars in a long spiraling arm. As we made love among the stars, our bodies disturbed countless stars, innumerable planetary systems. A single jiggle of my tits moved the stars out of alignment forever. The tensing of White Heart’s giant ballsack changed the shape of every constellation in the sky. Back in Equestria, ponies must have been looking up at us. One huge yellow shape, round and swollen with cum, and one white one, with a ballsack draped over the whole sky.

And we grew, alone together but perfectly content in each other’s company. For years we fucked, feeling each other in the most intimate way possible. White Heart loved me more longer and more deeply than anyone else could, as stars spun beneath us and galaxies dwindled in size until they were nothing more than pinpricks of light. He thrust inside me with enough force to make stars collapse, pounding at my marehood with a cock that was light-years long. Each load of cum could have submerged countless galaxies in thick, flowing white, but I held every drop inside myself. I grew so large that stars clung to my fur, their orbiting planets rebounding off my soft yellow breasts or my fat pink nipples.

I could barely even comprehend how big I’d gotten. The tips of my breasts were millions of light years away, but I felt everything - every star that bounced off my sensitive flesh, every galaxy that sunk into my swelling cleavage and was lost forever between my immense breasts. White Heart’s nuts, forever churning up an infinite load of thick, warm, wonderful cum, slapped against my belly with every thrust, smashing stars into stardust with the force of its impact.

Sometimes we spoke, and sometimes there were long silences where we simply felt each other. And sometimes we slept. Nothing could stop the endless orgasm we were sharing, but from time to time we drifted off, even as our bodies came and expanded in every direction. And one morning - although there were no mornings anymore, not when our bodies were bigger than any sun - White Heart woke me up with a kiss on the cheek.

“Fluttershy,” he said, giving me a gentle smile, “something happened while you were asleep. Do you see what’s out there?”

I turned my head and looked out ahead of me. There was an odd swirl of color all around us, a formless swirl that I hadn’t seen before. “What is it?” I asked.

“I think it’s the end of the universe,” said White Heart. I think we outgrew everything, Fluttershy. We filled up the whole universe, and we’re still growing. Every time we grow… we’re not just making ourselves bigger… we’re making the whole universe bigger.”

I laughed. “We’re finally bigger than anything,” I said. “I’m so glad we decided to test the limits of your magic, White Heart… and I’m even happier that it doesn’t have any limits. I love you, White Heart.”

“I love you too, Fluttershy,” said White Heart. He wrapped his arms around me and sunk his shaft deep into me - and when he came, my swelling body pushed the limits of the universe. “I’m so happy it’s you and me, growing like this… forever.”