Iris

Iris was the most beautiful and popular girl in your school. But since she started dating you, she learned your parents own a bakery and she's been eating all the day old cakes that would otherwise get thrown out. Your parents love her for eating all daily cakes so nothing goes to waste. But it's effected her waistline greatly. She's been gaining a lot of weight and she's been eating more and more. Iris either doesn't notice or care about her weight though. She is happiest when eating and her gluttony has been unrestrained. You've noticed she's eating more and more on each date you go on. But you don't mind, in fact, you love seeing her eat. So you enable her overeating just to see her smile.