Your girlfriend always had a thing for making sure you were eating plenty. You assumed it was just her way of looking after you - You know how easy it is to skip meals by accident. But being with her, that never, ever happened. Sometimes she'd make too much by mistake, but her cooking is so good, so you wouldn't let it go to waste.
It took a toll on your waistline though. You noticed it getting harder and harder to squeeze into your clothes. There was just... So much more of you now, and it was really getting in the way. You were having to suck in your stomach when putting on jeans, assuming you could even pull them up over your fatter ass first. Your girlfriend told you not to worry about it though, she liked the extra cushioning when you two were in the bedroom together. So you didn't worry.
One night, after an extra-large serving of your girlfriend's homemade pizza (she insisted that you eat most of it, since she wasn't that hungry), the button on your jeans popped off. You were embarrassed that you'd overeaten so much, but she just smiled at you and told you not to worry. "These things happen", she said. "I never liked those jeans anyway, they're manly-man jeans. But you're... Softer now". You both agreed you'd buy some new clothes at the mall tomorrow.
After a trip to the food court (her treat), she started picking out some new outfits for you that'd suit your new "padded" figure. You'd never needed to shop for XL clothes before, and you really didn't know what sort of outfits would look good on you now that you were... Heavier. Your girlfriend was happy to help though, measuring you up with a tape measure to make sure you were getting a good fit. She took great care measuring how thick your thighs had gotten, how wide your hips were now, how much your belly hung down from your waist and how much softer your chest had become. She seemed to be smiling a lot to herself, as she read out the measurements for your growing gut and developing bust.
"Your proportions are a little strange, men's sizes aren't going to fit you very well... I think some women's clothes will feel more comfortable."
Your were a little hesitant at first - You were a guy, you didn't want to wear dresses! But she reassured you that she'd just get you some androgynous stuff, nobody would be able to tell they were women's clothes. Plus, women's clothes tended to be stretchier too, just in case you softened up even more. You tried to tell her that wouldn't happen, but she was adamant that "it's better to be safe than sorry".
Weeks went by and you got used to the new outfits. They were way more comfortable, and you quickly started to forget that you were so much bigger and heavier than you used to be. Your girlfriend loved your new style too, she couldn't keep her hands off of you whenever your hung out together. She'd pull you in for cuddles, grabbing you by the hips and letting her fingers sink into your soft flesh. Whenever she rode you, she'd grab onto your belly rolls to keep herself steady, making them jiggle against your softening bussom. She'd always make you a snack after you were finished in the bedroom, for "working so hard", even when all you did was lie there and let her ride you.
As summer came, you started wearing outfits that showed a lot more skin, and your girlfriend firmly approved. It was getting so hot though, and you found yourself sweating like a pig all day. Long walks with your girlfriend were getting so much more tiring now... But she was very patient with you. She suggested you try shaving your body hair, since that was probably making your body overheat. You'd learned not to try to argue with her when she made comments like that - she'd just keep suggesting it until you finally did it, so why bother prolonging the inevitable? Your girlfriend is so smart anyway, she knows what she's talking about.
She really seemed to love how you looked now that your body was so much smoother as well as so much softer. She'd run her hands all over you whenever you two were cuddling together - Groping your thicker thighs, your doughy belly rolls, your fat ass and your squishy chest. For some reason, this always made you so hard. Something about the way she seemed to pant a little as she squeezed your soft flesh and felt you jiggle made your dick leak precum all over your thicc thighs. You never brought it up with her, but you were enjoying it. Sometimes you'd ask for seconds at dinner, even when your were full already, just because you knew you'd get extra groping once you two got into bed together.
One day, she came home with a bag of old clothes that one of her friends was getting rid of. The friend had been dieting, so she didn't need her plus-sized outfits any more. Your girlfriend thought that you might look pretty cute in them. The clothes you two had bought at the mall together had definitely had a feminine theme to them (despite your girlfriend's promise to the contrary), but this was a way bigger step. Skirts? Blouses? Dresses? There was no way you'd look good in those, you were a guy! You told her that she should take them to one of her other friends, you were never going to wear something like this, you weren't a girl.
Her tone shifted in an instant, but the smile never left her face.
"Oh, really? You're a guy? Because as far as I'm aware, guys tend to be pretty rough and tough. But you..." - She slid a hand into your waistband and grabbed a handful of your squishy belly chub - "...are pretty soft and delicate." You pushed her hand away, but she just pulled down your shorts instead, revealing your bouncy, overfed belly, your cellulite-covered thighs and your shaved dick, looking small in comparison to the abundance of soft flesh around it. "With how big you're getting, you can barely see your cock any more. I bet if you look down, you can't even get a good look at it, can you?" She was right: looking down, all you could see was your gut, with its cavernous belly button reminding you how much you'd been overfeeding it.
"Maybe when we first met, you were a guy... But now, I don't think there's any denying you've changed. You just couldn't help yourself, could you? Don't think I haven't noticed how greedy you've gotten. You love it when I grope your fat ass, don't you, baby? It makes you so wet when I rub your belly after you've finished everything I've made for you. Do you even notice how much of a muffin top you have now? Or how much your breasts and ass bounce as you walk? Because I do, baby. And I love it. And don't you want to make me happy, sweetheart?"
Everything was starting to make sense. The cooking, the groping, the encouragement to be lazier and greedier, the way she looks at you when you're eating your second serving of dessert... She's a feeder. How could you let her do this to you? You're so fat, you feel so big and soft and round and curvy and... There's something else, too. Some feeling you can't really place...
She grabs your belly with both hands and gives it a jiggle, making your tits bounce against it and your thighs jiggle too. Your cock suddenly jumps to attention, straining upwards against your heavy gut and just begging for attention. She runs her fingers along its length, making you shudder.
You feel sexy. You feel desirable. And you feel so fucking horny.
After a little bit of deliberation, you did what you were told. You tried to convince yourself that you were only doing this to keep your girlfriend happy, that she was going to owe you big-time for going along with this. But that was just how you were trying to rationalise it. In reality, the part of you that wanted to resist this had been withering away for a long time now.
She told you to put on one of the dresses, and you obeyed. Feeling the fabric against your soft, smooth flesh made your cock start leaking precum, and your girlfriend called you pathetic for marking the dress. That just made you even more desperately horny. The dress was a little bit loose (except from the tent formed by your cock in the front), but your girlfriend assured you "it won't be long until this gets too tight for you, so make the most of having a dress that fits while it lasts". Your instinct was to argue with her, but then you pictured her hands wrapped around you from behind, grabbing your belly through the tight fabric, listening to her whisper praise into your ear while you try to ignore how much your stomach is rumbling and how desperate you are for more food. That... Didn't sound so bad. You smiled to yourself at this thought, and she grabbed you by the cheeks and pulled you in close to her. "I made the right choice in choosing you, piggy". She kissed you, and you melted into her firm grip as she stroked your cock with one hand and grabbed your ass cheek tightly with the other.
The entire evening was spent with you sitting at the table in your new dress, with her standing over you and feeding you an obscene amount of food, bite after bite until she was satisfied that you were done. Pasta, bread, cake, so many calories were packed into your stuffed gut that you'd stopped trying to keep track of how much she'd hand-fed you. The only thing she let you use to wash it all down with was a carton of heavy cream she'd been saving just for you. The damp spot on your dress left by your precum had grown as the stuffing went on, interrupted periodically by your girlfriend giving you belly rubs to help you fit more food into your stomach. She kept calling you a good piggy, a well-behaved pet, a greedy little sow, her plump princess... Any thought of disobeying her was quickly fading from your mind, replaced with fantasies of being her fat feedee girlfriend.
Finally, she was satisfied with her work, and she helped you to the bedroom as you cradled your stuffed belly in both hands. You felt so full, but you were so proud of yourself. Your girlfriend was so pleased, and she was clearly so horny for her overfed pet. Her hands were squeezing every soft inch of you, she was whispering affectionate teasing into your ear, and she kept stroking your cock just enough to get you whimpering. You couldn't help yourself any more, you needed to do whatever she said!
She helped you out of your dress, which was much more snug around the waist than when you're been putting it on. She laid you down in bed, making out with you aggressively while her hands groped your soft, sensitive flesh and caressed your face gently. Both of her hands ended up on your belly, and your hands followed them there too. It was so big, so full, but still so soft and jiggly because of the fat she'd been piling onto you for so long now. Feeling the weight of it in your hands now, the extent that your body had changed because of her delicious cooking and groping and affection... You felt a warm feeling welling inside you, and you were excited to let her make you grow further. You wanted to be whatever she wanted you to be. You wanted to be her fat, horny mess, her prized pig, her blubbery whale who can't fight her gluttony any more.
When she finally let you enter her and started riding you, you felt your womanly curves bouncing with every thrust she made. You couldn't hold back your moans as she caressed every soft, padded inch of you, telling you what a fat, horny slut she's turned you into and how much she's going to enjoy feeding you every single night, turning you into her personal piglet, warping your mind until all you can think about is food, sex and pleasing her owner.
Every word she said pushed your mind deeper into submissive enslavement to her will. You were going to be her pet. Your were going to eat so much for her. You were going to let you turn you into her girlfriend. You were going to love every second of it.
From then on, your deepest desire became to give your girlfriend as much of you to play with as you possibly could, because you needed to be her soft, fat, pathetic plaything.
