PLEASE HELP ME!!!!!!!!!!!!!!!!!!!?

Okay, i like this guy and he likes me too. So we`ve been talking and he said friday we should go to the movies. of course i was excited and i said hmm how about narnia, he said that was cool. And i have no idea how to act around him or what to eat or just get a drink so i wont make alot of noice during the movie. I`m so freaking scared! HELP!