What can i do to hint him that I like him?

There is a guy that I like a lot. He is my dancing teacher. We danced quite a lot but seldom talked. We really didn't have a chance to get to know each other either. There are always people around us, it's hard to approach him. The thing is I can't just come tell him that I like him! I'm SHY and afraid of rejections! It hurts you know. Hey guys, what can I do in order to hint him that I like him? in order to get his attention? Like walking by him many times, laughing out loud such that he can hear me...or what? Please help. Thanks.