I'm serious, you need to ask him. I can tell you from first hand experience that sitting around on your hands doesn't do anything. Even if he does like you he may be too nervous to say anything. Once upon a time I really liked a guy and never said anything. I missed my oportunity. About a year after I lost contact with him, a mutual friend told me that yes, he did like me. But he was so shy he never spoke up, and I never spoke up. And I've never seen him again. That was 14 years ago!

It sounds like he likes you. Guys don't usually pay for people or bring them around friends unless they like them. But the only way to know 100% is to ask him.