How can i relax if my crush is around?

hi there! I have a crush in our church. He's a member of choir and i'm a member of media dept. Whenever he's around, i feel like am shaking or nervous although i'm really not. I love chatting with him on fb,but whenever i actually see him, i don't feel like talking to him coz it seems my tongue is being pulled out.. :D. And he's the one who comes to me and say '' hi, how are you?'' and he even sat beside me so near as if he wanted to hug me.. Hehe,I don't know if he likes me.. But hopefully.. :))