Lesbian with Straight Fantasies

So let's get one thing out of the way right now. I AM A LESBIAN. The thought of being with a guy romantically makes me cringe. I don't want you all saying, "Oh, maybe you secretly crave being with a guy." or "Maybe your bi.". I have also never had sex of any kind, only ever masturbated. With this in mind I can not get any kind of release without fantasizing about dick. But, that's it, just dick. I never get passed that, no chest, no face, no legs, just dick. Normally my fantasies consist of the cliche, virgin step-daughted and her older step-dad. I do know even without having sex, I am very submissive and enjoy being dominated. This all makes me think that maybe because I have never had sex with a women and am so used to the norm of a male being dominant, I have trouble connecting in my head being dominated by a female. Even though I know logically there are many very dominant females, especially lesbians. I have tried fantasizing about having sex with a women but while it initially turns me on, I can't get anywhere without continueing on with the thought of dick (I also often fantasize about them cumming inside me, which again I think has more to do with dominance because that now sounds horrible and disgusting.). I also feel it is worth mentioning I do sometimes bring a female third party into the mix. I am so very confused! Again, being with a male romantically does nothing for me and being with a male sexually does not in any way turn me on unless in the heat of the moment. I love females! I love boob's! I love the softness and feelings they give me. I am just very confused with myself and why dick turns me on when I know myself to be very much into women.