Okay, confession time: we're infuriating to most people. I am just beginning to understand that, but I have been called cold, emotionless, arrogant, and statue-like. Those are the friendly terms. The emotional/social realm is something we just don't comprehend, but that doesn't mean we don't feel; we just have problems displaying emotions, recognizing social cues, and communicating our feelings and needs.

So you need to be precise about what you are thinking and feeling, because he almost assuredly won't pick up on your facial expressions, body language, or subtle hints. Also, understand that he expresses himself differently from most people, and don't expect the same sort of displays of affection that you would from most people. We tend to interact with other people through interests and experiences rather than emotions. The thing with the cheese is a good example. And, yeah, a lot of the time you will have to initiate any interaction deeper than just relaying information back and forth because he probably won't think to do that on his own.

Lastly, how your post started: "I met someone with Aspergers and I want to support and show them I care and be able to communicate to them effectively," shows that you're already doing the most critical thing you can do, which is understand and accept.