I am a 15 year old male. I have been straight my entire life and have some romantic experience with girls. As a whole I am very attracted to girls. I absolutely worship the female body, and am turned on by them. But recently I've had some thoughts about guys as well. I have watched some male pornography and found myself turned on by attractive male models online. However I do not find any attraction to the guys I see daily ever. I know from the girls which guys are supposed to be cute. Yet I have no attraction to them. I cannot begin to imagine actually going on a date with a man. I guess I am confused because I am attracted to women 24/7, and attracted to men only in the confines of pornography or the occasional thoughts fantasies while masturbating. Am I bi-sexual? What does this mean?

I recently turned 24 and I have never been in a real relationship. I am in love with my best friend, with whom I have had a very interesting and painful 4 year friendship. He took my virginity at the age of 21, and he is one of 2.5 guys I have slept with; he is the only one I have hooked up with more than a couple times. He has cheated on two different girl friends with me, and he tells me he loves me but he has always been very clear that he will never be in a relationship with me. I have asked him a couple of times why. After a lot of beginning, he finally gave me list of everything that is physically and mentally wrong with me.