Then you're straight.
It's pretty much a requirement of being bi or gay that you be attracted to the physical attributes of the same sex.
I say, why consider yourself any label? You COULD be straight, bi, or gay, but why? Why not just relax, and enjoy the people you are attracted to, be it male or female, and no matter what gender you are portraying at the time. If the world could do away with labels, I think things would be MUCH MUCH better off. Just enjoy life girl, be yourself, and damn the labels. If you find other attractive, go for it.