Bisexuality Support Group
Bisexuality is a sexual orientation which refers to the aesthetic, romantic, and/or sexual attraction of individuals to other individuals of both their own and the opposite gender or sex. Most bisexuals are not equally attracted to men and women, and may even shift between states of finding either sex exclusively attractive over the course of time.
Once you know what it is you desire/need from another person, it becomes easier to weed out the people who will never match those desires/needs.
Hang in there! It'll get better!
A better solution might be to realize that a crush is just a crush. It's a wonderful feeling, but it's also a painful feeling when it forces you to see things for what they really are.
If you really value the friendship, don't spoil it by trying to make it into something else, or to change her into something she wouldn't want to be.
Crushes often fade as fast as the come, but a good friendship is something that can last..