Do you like being around him? Are you trying to flirt with him? Do you think about him, and stuff you could do with him (dates, talk, jokes, kiss)? This would mostly mean that you have a crush on him. Then there's always that your heart beats near him, you blush when you hear about him or something like that. But not everyone does that. If you feel a lot more stuff going on in your mind, then you like him. You like him more than a crush.
If you don't know you like a guy, it means that you just don't like him or you just friends. If you like him you should know.
This is a tongue twister. And no.
nothing! they maybe know that the guy you like likes you back!
Get to know him.
It is ok to like a guy after you know he likes you. That is perfectly normal and a part of life.
do you mean how do GUYS tease their mates if they like a guy? As in, try to get the guy they like to know they like them? Or make fun of them because they like a guy? be specific.
Try to make him know that you are not a guy but a girl :)
Ask them...
If a guy likes you but you don't know him he may look at you or walk by you whenever possible.
maybe he like ya and he wanna know if you like him
If he says i like you
ask him