Why is he being like this?

I like this guy and he likes me too. whenever im away from him i go crazy and think about him lots. but every time im with him he doesnt treat me any different. like i talk to him on aim all the time and he tells me how perfect i am so i know he likes me and all that but he never shows it. we saw a movie the other night and i sat next to him and he didnt even pull the whole "im stretching my arms across the back of your seat" thing. is he jus shy? nervous? how can i help make him feel more comfortable around me?

Nervous. Been there done that. He just doesn't wanna f*** up and scare you off. Just talk to him and tell him it's alright.

He's shy.

Just let him be; he'll come around on his own.

Be patient and little by little start giving him signs of thrust. he'll come around.