Far be it from me to try to define someone else's sexuality, but as someone who identifies as bisexual, I feel like I could give you an accurate definition of bisexuality. I would define it as the desire to have sex with and possibly date both men and women. This may include ALL gender identities (often defined as being pansexual). If you have no desire to have sex with or date anyone, I believe that the most accurate sexuality may be asexual.

Also, note that one only needs the desire to have sex with women to be considered bisexual (or lesbian). Sometimes life circumstances make that not necessarily become a reality. For example, I did not have the opportunity (and I was in denial) when I was single and now I'm in a monogamous relationship with a male partner meaning I may not ever have sex with a woman, but I WANT to.

And how do I define this "wanting to"? I look at women wanting to know what it would feel like to touch them, what they would look like naked, what they would taste like, and then becoming aroused. When I look at women's' outfits, I'm not thinking it's lovely, where did she get it? (nothing wrong with that though!), I'm thinking how nice those pants make her butt look etc. If you don't think of women in a sexual way, it might be hard to describe yourself as lesbian/bisexual as those by definition mean you're sexually attracted to women (and men as well if you're bisexual).

Maybe you're asexual and biromantic? But again, far be it from me to try to define your sexuality...

I would post links, but I don't have enough posts. Google "vanderbilt lgbt definition" and that will give you definitions of common sexual identities.