Perhaps your sexual preferences lie in other realms than simple man on woman desires. If you really do prefer one sexual orientation to another then explore it and try and discover if the grass is in fact greener on the other side, just don't burn your bridges in the process.

you ma be gay or bisexual. just feel open to everything. good luck!

I discovered that my boyfriend watches tranny porn, at first I thought it was kind of gross. However, knowing that anal arouses him I figured it was something to do with that. He is also very sexual, we have plenty of sex, and he watches porn on off days. I was curious though if he was gay/bi/curious, and being a beloved (female) porn user myself, I checked out Tranny porn. I actually found female on tranny very enjoyable, even though I am not attracted to women sexually. I do not know your situation, and think that there are several possibilities why you enjoy it and find it satisfies you more than your girlfriend. You may in fact be gay or bi, or you may simply find it turns you on (believe me there are wierder turn ons than that). Perhaps you are finding yourself less and less satified with her because you cannot share your attraction with her so you resent her for it. I don't really know, I am not a doctor. All I know is that sex is very primal, and attraction is natural = don't worry about it. Mabe try to get her to have anal sex with you, maybe think about having some new experiences outside of the "norm" of women.