If a guy is interested, how do I tell him I'm gay without starting a potential kerfuffle? I don't want to be standoffish and rude.
Tell the guy that you're flattered, but that you aren't interested in dating guys. It can be as simple as that.
If he's an asshole he'll probably be all 'I WASN'T EVEN INTERESTED'. If he's a nice guy he won't make a kerfuffle at all. If he's an asshole....that's his problem.
if you are out just say you swing for the same side as him and if you aint.. just say sorry but you dont look at him that way but you can still be friends?