Kiriyu said:
So what am I? Am I lesbian?!?!?
Lesbian wouldn't be my first guess. You seem pretty straight, but not close-minded in the least. It wouldn't shock me if you hadn't at least thought about it or maybe even had a memorable experience.
I don't know how you are with men, but you don't seem to be too judgmental or uptight about women and you don't seem like the type that would be offended if a girl flirted with you. Flattered, if anything.
If you haven't yet, given the right opportunity, situation, and the right girl, I wouldn't bet against it.