I don't like men usually, but I could see myself falling for a really really girly guy though, maybe a transvestite who I wouldn't even know was technically a male until I'm told, because honestly if I liked HER enough I wouldn't care that SHE has a penis, and as you can see, would just consider her to be female. There are more important things than sex anyways, and some of the very authentic-looking ones look honestly quite beautiful. I'm very opened minded so although I consider myself straight I am willing to try anything once, and I think in some very extreme circumstances emotional attraction can transcend gender confinements, so it could even be possible for me (and all other guys in the right circumstances) to fall for a guy who looks like a guy. Maybe Gordan Freeman <3
We're all a little bit bisexual, it's just that most people label themselves closer to the attraction they are more familiar/comfortable with, or the one that is much stronger than the other, either this or they just haven't had an opportunity or can open their mind enough to discover their other side. Attraction is very deep and can present itself on both physical or emotional levels, it's never so black and white.