Why does my GF like my fat (10 points)?

I'm with a guy who is slightly on the big side atm, and I couldn't be happier. I'm quite small myself and I've always liked the look of guys who have a bit of fat, its nice and I, like your girlfriend, like to have something to grab on to. Don't think that shes settling for how you look she just likes it, I've been with more muscular guys and I prefer the way my man now looks, its so much nicer to cuddle someone like that :)