I'm sorry surprise, but I am going to have to disagree with you completely.
It sounds like your friend is showing her true colors, if you know what I mean... Well, I say, she isn't worth it...
Friends are there through thick and thin, and if she thinks she's hot s**t just because she's bisexual, it sounds to me like she's just in it for the attention.
Besides, whatever happened to boys come and go, but friends are forever?
Or Bros before hoes?
There are TONS of people in the world, billions even, so try to go out and make some new friends, or hang around with some of the other friends you have and get to know them a little bit better... it will make you feel a bit better yourself, and you won't have to deal with your friend.
Whatever happens, will happen.