Yep, you're a straight cocksucker alright. You self identify as straight, you do not like kissing guys and you have no interest in any kind of romantic attachment with another man. You're probably incapable of such an attachment. But you like to suck cocks. If sucking cocks is something you enjoy, then go for it. And don't let anyone else tell you what you should or should not be doing. The number one rule of sex is that no one has to do anything he or she does not want to do. If all you want to do with another man is to suck his dick, then do it.

And, hey, there are a lot of times when all a man wants is to get his cock sucked. So this is a win/win situation. The other guy gets his rocks off and you get the pleasure of sucking hime off.