good question, yuni.
hmm, it kinda went hand in hand with my tickling fetish, and i remember having those since before i was sexually mature (=_= ...that was a confusing childhood)
hehe actually, i remember this one female friend of mine back in later grade school, who would come over from down the street to swim in our pool, and she would wear a two-piece and I would always reach over and touch her exposed belly. and then the next time she came over, she wore a one piece and said "now you can touch my belly ;P" haha o well it was fun while it lasted ^^
*memories come flowing back lol*
o yeah and another time (way back in first grade), there was this one girl who (and omygawd now that i think back on this i can't believe it) would actually find a spot in the classroom with me that no one was watching and let me feel her belly up her shirt.
D: holy crap, i was a perv
*Gulp* My heart is going toki-doki, toki-doki...... And I feel heat in my cheeks after reading this. :blush
I think I can understand it now... One way to get a fetish is to have something like this happen to you. That is a better way to achieve it.
It happened to me just like this.
My friend's sister came to sleep over in my house. She was very tall and strong for girl. But with very gentle, lovely, but modest curves. Nerdy (she wore glasses and had high grades) but pretty and she loved anime and video games. Something like Yomi from Azumanga Daioh, but this one had a bossy personality and could be quite venomous. Anyway... As there was a shortage of beds to sleep on, and we had to share one. The whole thing seemed awkward to me as I didn't quite like her as a girl. But when we finally settled in, a few minutes passed and then she told me:'' I can't sleep. Put your hand around me!''
At first I was afraid she would bite it or brake it, but then she just relaxed and fell asleep. She was snoring just enough for it to be cute as hell.
I couldn't sleep then as I had a fever:lol
That's when I got my megane ko (nerdy/glasses girl) fetish.
Another way is to get to understand somebody else's fetish.
I got futanari (dickgirls) fetish from my friend after he finally explained it to me properly. Now I think I'm beginning to understand this tummy fetish of yours, when I got a clearer picture of how to look at it.
But it can never be as strong as when you get it by experience.