How can you tell if a boy likes you but he is not mean to you?

You mean other than being mean to you?

Well, when I like a girl I tend to glance in their direction alot. You probably wouldn't see a guy staring at you unless he's creepy or you're REALLY hot. I might also try to move physically closer to them to make starting up a conversation easier. Other than that... I guess just talking to you would mean he likes you in some way. hope this helps