I've been reading this thread for a while now and have to agree with Divine that sexuality is a huge part of who you are. I'm bisexual and struggled with this for the duration of my teenage years, finally coming to terms with it and accepting that, yes, I am a woman who is sexually attracted to both men and women. It's men that I prefer being in relationships with though.
It's very liberating to do so, and I highly recommend you do the same.