Ok so romantically it's all about men, I'm attracted to them sexually as well... So that part is all normal but I do get really turned on by lesbian porn and boobs and stuff. It's just like a fantasy of mine I guess I really don't believe I'd do anything sexually with them or anything but the porn really does get me going. And I'm 18 and I guess it's normal to be curious sometimes but idk, does this sound normal? Maybe I'm heteroflexible or something?
Yes it's normal. Plenty of straight women prefer lesbian porn because women are beautiful to look at, put two of them together and it's a beauty explosion! Sex (whichever genders involved) is arousing. If you don't have any desire to be sexual with a woman then I doubt you have any same-sex leanings.
This, but I'll add: Often times, for women, they like lesbian porn because it's... well, women... they know how it feels to touch certain sports. You can empathize with them, which kind of adds a sexier layer to it, if you will.