You ask him out first.
Yes, that is pretty much what single gay males do; they date guys.
No usher is not gay. He did not date a guy.
if you are not gay, just take the compliment. If you are gay, you might consider a date.
They ask another gay guy that they like if they will go out with him! That question is as simple as heck
Gay individuals get jealous just as anyone else does.
if he was closested
If you like, sure.
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.
You tell him you love him and you're willing to talk about feelings and stuff.
You should probably get to know him first. Go out on a date or two.
Calmly say "No, thank you." You could also say, "I'm not gay, but I wouldn't mind going out as friends." (But if you do this, be very clear that you are just talking about a guys' night out, and nothing like a date.)
Well if you're going on a date then he's obviously not straight in the first place.