Am I Gay, Bi, or Straight?

Sup, so basically, I'm pretty confused atm. I'm 13, and when I masturbate I masturbate to all kinds of porn, but I do masturbate to gay porn too. when im jacking off I think about having sex with a guy, and usually not with a girl. Once I cum I immediately regret it and feel disgusted by teh thought of it. sometimes when I'm at school, I have on a couple occasions caught myself thinking about having sexual relations with the best looking kid in the class or with a close friend. most of the time at school/outside I think about girls. I've had several girlfriends and am atm basically in love with a girl. I'm just worried I may be bisexual (not that its WRONG, per se) as I do think about getting it up the (you know), and doing it up the (you know) to another boy, as well as oral sex/ extensive kissing, basically anything sexual. i also tried analy masturbating