I'm a 16 year old male and still pubescent. I masturbate to heterosexual porn, but sometimes I can't help but notice a guy's body in a change room, and sometimes thing about it offhandedly. I have no problem with gay people, but being one just doesn't seem desirable to me, I'm not meaning to offend anybody. To further complicate things, I have a girlfriend, who I do care about, but I feel that when things are getting "more involved", I lack passion. Opinions?