I will give you an example and you tell me what you think.
I have a 22 year old friend who is in the Marine Corp. I met him and his future wife when he was about 18, finisning up High School. We became good friends as we shared a common interest. This kid is the epitome of what one envisions when you think Marine, lean, athletic and chisled good looks. Me and him were hanging out at my house one night, drinking and watching movies when he discovered one of my straight porn movies and he wanted to watch it. so I put it on. Of course, one thing led to another and soon we found ourselves sitting on the couch next to each other stroking our rock hard cocks.
It took some coaxing, but eventualy, he let me touch his cock which of course turned into me stripping him naked and sucking his cock. Now I have a habit of playing with a guys ass when I am sucking dick, and this was no diferent. What surprised me was that he was receptive and I soon had a finger up in there, massaging his prostrate and bringing him to a volcanic eruption that overfilled my mouth with it's hot molten lava. We repeated this scenario on susequent visits and eventually worked our way up to me popping his virgin ass cherry. That started an ongoing "affair" of him coming to see me whenever he felt the "urge", he has never sucked my dick, he has never fucked me, he's is not into guys, even to the point of being a bit homophobic about it. He joined the Marines when he turned 19, is still enlisted and is now a full sergent, he married his high school sweetheart and they plan to have kids. To this day, he still visits me when he gets the "urge", were still good friends, still share a common interest. He has never done anything with another guy except me. I would love to be able to hold him and kiss him, but I respect his boundries and have to be content that he loves my cock in his ass, and that brings him off everytime, sometimes without touching himself.
So you tell me, is he straight, gay or bi?
-J
p.s- He considers himself totally straight, and thinks of me as being "a little bit bi"