Here's the thing: You like the sex. Hell, you call it "great" - so the question really is, Does your new man think you're a lazy lover? A shot-gun honey, a passenger on his wang mobile if you will? I can't say for sure.
Here are some things to consider:
1. When a guy is in the driver's seat - in charge -- he is moving his body (and yours) in ways that feel (and look) great to him. This should make him happy.
2. Maybe you are underestimating your role in all this. If you are oohing and ahhing all over the place; if you are slightly moving this way or that, he is likely taking your lead and running with it. In other words if you are orgasming from him doing X - he probably is enjoying it a hell of a lot too.
3. Does he look miserable during sex and stop humping when you are done? Is he happy to flaccidly retreat from the session or does he grow with passion and climax too?
Finally, as this is a new relationship. Ask him. Ask him what he likes and so on. I'm sure he will appreciate the conversation and thus you will be contributing greatly already.