I took a class about a year ago where we talked a lot about the whole "are you gay or straight" thing, and we learned about something called the Kinsey Scale.
It's a scale of 0-6 with 0 being completely straight with no "gay" fantasies or thoughts whatsoever, and 6 being the complete opposite. Learning about it made me change the way that I think about different sexualities and made me appreciate them more.
On that scale, I would put myself as a 1 because I've only fantasized and wouldn't actually date another girl and consider myself to be straight.
I used to sort of consider myself as asexual though because I was completely repulsed by the idea of any sort of sexual interaction with anyone and wanted nothing to do with it. I've never actually met someone else who considers or used to consider themselves asexual though. I'm curious to see if anyone here does.
Kinsey Scale's good although I don't feel like it really highlights sexuality well enough. It's far more fluid and diverse than the 0-6 on the Kinsey Scale.