should I ask him out or wait??

Most guys, as angelfire says, if they know a girl likes them, will act on it, if they like her back. Problem is, for guys establishing that the girl actually does like him in that way can be incredibly difficult. Does he actually know for sure that you like him?

I think usually guy’s body language is fairly obvious when they like a girl and want to go out with them. But often, a guy won’t make a move if he likes a girl because he’s unsure of whether the girl likes him back - because, funnily enough, the body language of girls can be extremely hard to read - are they just being nice, are they just being playful in a platonic way, or do they like you - its never easy for a guy to figure out. Often girls hide their feelings from being obvious to guys because they don’t want to appear desperate, easy, or slutty to the guy or their friends. And then, sometimes a guy will give up on the idea of potentially dating a girl he likes because he doesn’t think he stands a chance or thinks it won’t happen, as much as he’d like it too. Or, if you’re friends, he might be afraid of ruining the friendship if you reject him. Its complicated!

If you really want to go out with him, and you think there is a chance he likes you back, then perhaps you can try making the first move and ask him out - guys really like that too btw. From what you said, its hard to tell whether he does or doesn’t - could be either one in my opinion…