There are two answers to this question
1:you can ask them if he is dating someone
2:you can make out with him and if he stops and tells you that he is dating someone
Guy: Hi!You: i'm gay.
Kiss him.
Girls can tell or know if a guy is gay by observing his behavior in a group of men.
There's no better way to find out than ask the guy if he's gay. That way you will know and can move on if he is gay.
I don't know if they would stop you or not, but you would look sorta gay.
Go talk to him and get on friendly terms with him. Then let him know you are single or whatever. Then just let things progress.
I'm guessing the question is if you'd do (have sex with) a guy but not date one, if you wouldn't have sex with a women, but you would with a dude and you are a dude, than yes that would make you "gay" the dating thing is a different issue, I'm gay and enjoy being single, but a lot of gays have self hate or fear and won't date a guy (or kiss) for fear that makes them gay.
he would want to know your statistic if you are single or not
Yes, that is pretty much what single gay males do; they date guys.
Hi, I hear we have something in common. Hi, you know, I would really like to know you better. If you know he is gay, all you have to do is tell him. It shouldn't be a big deal.
I suppose you would need to ask them. I can't see any intelligent method to form an opinion from that single fact.
you ask him