I think my gf has turned me

We have always watch porn together and take turns in choosing what category to put on. Normally I choose m and f porn but last month I fancied some lesbian. My gf didn’t have a problem with that as she is bi but when I came to her turn she want gay porn which obliged to as it was only fair. I shot the biggest load of my life and since then that’s all I can watch, the thought of trying a cock in me is such a turn on now I don’t want to go near my gf anymore.
who wants to fully turn me into what my true calling is ment to be