Sweetie, I can't tell you whether or not to go out with him, but I can give you a few pointers:
* Sex in a public place is a crime. It's NOT a good idea. And yes, even though it's very dark, a movie theatre is public.
* No one should "expect" sexual acts from anyone, no matter what. It's up to you whether you do something or not, ALWAYS.
* You say you don't feel comfortable. Don't do anything you aren't 100% okay with. Trust your gut, here - it doesn't sound like you're too excited to be going out with this guy, and I for one don't blame you.
"Ooh, I'll settle down with some old story/About a boy who's just like me/Thought there was love in everything and everyone, you're so naive!"-Belle and Sebastian, "Get Me Away From Here I'm Dying"