Guest from Sanity, since you clearly have decided to behave as a heterosexual, I have to assume that you are bisexual. For me, and for everyone else I know who is firmly either heterosexual or homosexual, there wasn't a choice. You are one of the lucky few who get to choose your sexual partners based on who they are, without also having to take into account what gender they are. I'm sorry you have chosen to limit yourself to women. That must be difficult for you sometimes.