He'll look at you differently.
well it depends how he acts around you. if he is nicer to you than to anyone else than yes, if not who knows?
http://www.wikihow.com/Know-if-a-Guy-Likes-You
happens allthe time
because if a girl stay around that guy and she knows he has a crush on her he would probably try to get serious with the girl
Ask him!
Tell him you like him and probably doesn't know how to ask you out.
you can either try to befriend him and ask him out when he knows you well. stalking is BAD and will ruin your chances if he knew
asking him would work
get to know him then he won't be shy
yes
it might be he wants to know if you like someone or you might have a crush on him
He could have gotten over his crush, is trying to get over his crush and does not want to ask you out, or does like you but does not know how to show it.