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Catherine was a sweet girl. At 23 she was thin as a rail. Weighing in at 105 lbs, she not the most shapely of girls, but was very pretty none the less. She had been with her boyfriend Mike for several years now, and before that she new him through most of high school and college. She was barely an adult when word of the expansion epidemic had spread. She had always wondered if it would happen to her, but no matter how many years went by, she didn't even put on a pound. One day, Catherine and Mike were sitting down to dinner. She cooked something new this night, something neither of them had tried. It wasn't the best meal they'd shared, but Mike loved her cooking regardless, and was just thankful for a kind hearted girlfriend who loved to make him good food.

Mike had a surprise in mind for Catherine. Marriage. He had the engagement ring bought and ready to give to her, but wasn't sure how to give it to her. He knew that for this special girl, he needed to ask her in a way that would sweep her off her feet.

They laid down to sleep after a passionate night. Mike woke up to notice something different about Catherine. her ass was much bigger. Not huge, but it wasn't the same back end he'd known so well for years. And he immediately noticed that he liked it. It took her a few days to notice her cloths weren't fitting her the same. She just assumed it was her getting older or eating too much, but it didn't bother her. A few weeks went by, and Mike couldn't think of how to say it. She prepared the same meal for them that she had cooked several weeks prior. She said it was because the love making seemed so much better after the meal that she was hoping maybe this meal was a sort of good luck dinner.

And she was right. Even better than the last time, they made love to each other like never before. Mike woke up to another surprise. Catherine's ass was huge. It was like she had stolen a fat girls bottom. Mike couldn't help it, he woke up her up so they could share a passionate few hours before they had to do their daily routines.

Catherine said to him that she thought maybe she was having an allergic reaction to the ingredients of the meal. Mike assured her that it was probably something else, maybe it was some hidden genetics. A few weeks went by, and mike started to realize he was imagining those hips grow bigger, that ass get rounder. And he could tell that even her breasts were starting to get plump.

He started to learn how to cook, much to Catherine's surprise. He made a different meal, for every ingredient that was in the dish Catherine had dubbed their "sexy meal". Finally, he found it. Sure enough, the same events happened. Even though it was a totally different meal, they still had a passionate night or love making, only to wake up to a bigger girlfriend. It was amazing. He felt guilty, but he kept finding new ways to include the ingredient, knowing what it did to her, to him.

Months went by. Catherine complained about how fat she'd gotten. She always made complaints and promises to work out, to lose weight. Mike just tried to keep his cool and told her that she was beautiful the way she was, and didn't need to do anything about it.

Mike had to leave town for a few days. He felt really guilty about what he'd done to Catherine. She looked so good to him, that he didn't know what he should do. Should he tell her? Should he continue what he was doing? Should he keep his mouth shut and never let her eat that food again? When Mike called Catherine saying he was back in town, she told him she had something to show him. He got home, and went into their bedroom.

Catherine was enormous. Breasts that each would put a pregnant woman's belly to shame. Her thighs so fat they could barely bend at the knee. And she had an ass that could be noticed even from in front. Huge under garments were thrown around the room. She must not have known her size from growing so quickly. She looked like a goddess to Mike. Had this been a result of what he'd done to her? He had to confess.

But then she said, "Mike, I know what you've been up to. I think someone had a dirty secret, and they didn't want to tell me what it was." She looked him in the face with a huge grin. "But I learned what your secret is. And I think you like what you see. So, before I let you come any closer, are their any other secrets I should know about my sneaky boyfriend? Hmmm?"

Mike swallowed hard, now was as good a time as any. He had his hand in his jacket pocket, and felt the box that contained a gorgeous silver ring. "I have one more thing to surprise you with."



Edit: I tried to fix her face. It was always the one part that bugged me. Hope you like this version better.