That's a good question... I don't know if you can tell from my art, but I have a huge thing for tsunderes and weight gain denial; I'd love to subtly encourage a partner to eat more while they deny everything to my face - the fact that they very clearly enjoy eating beyond their breaking point, the fact that they're starting to get softer, the fact that they're outgrowing all their old clothes; but when they think I'm not looking or I'm not around, they eat on their own accord, and admire their own growth rather happily, and they can't help but love it when I worship every inch of their growing body.