Hmm.. Maybe I can help, but don't get mad if I can't 
First, how do you like about guys? When he was top or bottom? How his body look? If you were cuddling with a guy, what would you do?
The question #2 would be the same thing about girls.
I have been confusing myself for long time, I thought I do like both, but somehow I was starting finding out that I actually prefer cocks over female's stuff, and love when guys act like a man around me, so the girls or women doesn't have anything to attract me at all, really. It's no point for me to hiding myself or I will not be happy with myself because I was being dishonest with myself, ya know what I mean..
Anyway, hope I can help 
