Try being more initiative. Instead of trying to get his attention so that he will make a move why don't you try making the first move? I can't think of a dude that would turn down his girl if she was all over him.
All kidding aside, ask him! I know it sounds cliche, and especially coming from a stranger. But my wife and I have been in a position like you describe, and in our case, it was all about misunderstood communications.