This is something I've been thinking a lot about lately, BG. It isnt even close to black and white, is it? i have a friend who is transgender (biological female) and he considers himself a straight male. he is dating a woman who considers herself a lesbian. and its all good, whoever you are.
For what it's worth, I consider myself naturally a bisexual man, But I choose to label myself gay because I prefer to have a gay (or bi) male partner and have no plans on dating a woman again. So there ya go.
Thanks for posting.