There are always signs that a guy likes you, different guys show it in different ways. He might stare at you or be really nice to you or be really mean to you. Whatever signs he used to show will have gone if hes over you. If you like this guy who you thought liked you, you should go and tell him how you feel.
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.
http://www.wikihow.com/Know-if-a-Guy-Likes-You
happens allthe time
He will try to call you or text you or just smiles or stares and stuff
Ask him!
asking him would work
get to know him then he won't be shy
it might be he wants to know if you like someone or you might have a crush on him
if he is still shy to me
He'll look at you differently.
From what i Understand of "De-crush". If you want to decrush a guy, when he has a crush on you then you should tell him as soon as possible. You should let him know that you know he has a crush on you, and that right now you are not interested but can be friends etc. The more time you leave it, the more painful the result will be. If however you meant that you have a crush on a guy and you want to stop it, then simply put it aside and think of something else. lol
Its because they know about your crush