If you're sexually turned-on by thoughts of other women, as well as by men, I would come to the conclusion that you're bisexual (like me). If you're not turned on by men, yeah, it sounds like you're a lesbian.

I've heard women say before that they can't be gay or bi because they're not interested in, as you say, "tasting" a woman. Personally, I don't think that's the most relevant point, since plenty of straight men are turned off by going down there, and they still like women. There are tons of ways for two women to have sex, including with toys, manual sex, breast play, etc. Cunnilingus isn't the be-all-and-end-all of a lesbian sex life.

However, it's your sexuality and you can define it however you want. If you don't think of yourself as bi or lesbian, that is 100% your business.