I can relate. I do not think it is weird at all. I use to feel, a lot of times still do, just like that. I was really really skinny all my life & always had very similar feelings. I remember role playing by myself when I was a kid. Until recently, I always hid this fetish from family, friends & lovers completely. It sucked because during intimate times I always wanted to voice my desires but never could. Not sure if you are like this but, for me, I can only climax with a partner, male or female, if I'm either thinking about my belly being fat or if someone or myself is playing with my belly fat. As I've gotten older I've kind of become more accepting & open about it, well at least the gaining weight part because I have & there's no hiding it. Only 2 people in my life know about the fetish part of it. My only real advise is to try and not be ashamed or hide it from your so/partner. Good luck.
4 years