Sexuality, straight but I like gay porn

Hi I am 21 and I have lots of sexuality questions, At this point in my life, I watch and jerk off too gay porn or sometimes bisexual porn MMF Most of the time I get more turned on by gay porn, But coming down to it I don't want to be gay, I like woman I've had a few girlfriends before and sex with them, but not that I'm single i find my self watching more gay porn then straight, I don't have much hornyness over girl or boys, sex is not in my head allday, I'm good with my hands and porn for now, since the whole sexual category confuses me, Does it have to do since, when I was 14 years old my first sexual contact was with a guy and after that until I was 17 was with guys, just fooling around handjobs and blowjobs in school, and when I left school ( religious school) I had sex for the first time with a female, but that's it, now every time I get turned on I watch gay or bi porn but I can't imagine my self Being in a gay relationship, I like girl and I see a future with girls but why am I attracted to gay porn and have a gay brain? Should I stop watching it and start watching straight porn? Will I be like this forever even if I go into a relationship with a girl? Anyone else have something similar to this ? Thank you