If he always tell you that your ugly and he stares at you ALL the time, then he really likes you... if he denies it go up to him alone then ask him and if you like him tell him. he'll appreciate that.. :)
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 :)
If a guy likes you but you don't know him he may look at you or walk by you whenever possible.
ask him
If he says i like you
you tell him
Ask them...