Gay porn can turn me on. I am confused about my orientation

Ive always considered myself to be straight. Throughout my school days ive always had crushes on girls, and never on guys. Ive never had any sexual encounter before in my life. Ive been questioning my sexual orientation for about a year now because I can get off to gay porn. I can also get off to lesbian and straight porn. When I watch straight or lesbian porn, more often then not I get an erection just by watching. When I watch gay porn, I dont get an erection by just watching, I have start to masturbate to get one. I usually get off to gay porn pretty quickly though, usually more quickly than to lesbian or straight porn. I usually get the same orgasm in regards to satisfaction level from all three types aswell. And as far as fantasys go, I can fantasize about girls or guys. When I see a guy in real life, im able to acknowledge as to wether he is attractive or not, but I dont think i am attracted to him himself. I am usually more attracted to women. I have many guy friends aswell. All of whom I chill with, and never think about them sexually when I am around them. Women on the other hand, not only do i think about them sexually, but I can get aroused just by being close to them (psysically). I really dont want to be gay or bisexual. Not because I am a homophobe, not because i am a bigot, not because my parents bigots, and sure as hell not because im religious. Its because I always fall so hard for girls. I want nothing more to have an sexy amazing woman by my side, to love, care for, make love, cuddle and all that. However, I feel that no woman would accept me if i was bisexual. Im kind of a basket case, and i thank anyone for taking the time to read my post. Its all this getting off to gay porn c**p that has my head in a daze. Please tell me what you think. Do I sound straight? Bi? Gay in denial? Any suggestions, anything.  Keep in mind, if you have noting nice to say, keep it to yourself. Thankyou. Im 20 btw if that helps. all done puberty.