Am i bi or what?

Okay so I've only had sex with my current boyfriend BUT before we started dating (so when i was a virgin) i used to masturbate to lesbian porn i mean its super kinky to me! But i wouldn't say im lesbian cause im not but bisexual doesnt seem to fit me, I just wouldnt care if my soul mate was a girl or a boy, i would still have sex with my partner no matter the gender, what am i?