Are you anxious with him regardless of what you are talking about, or are there particular topics that bother you? Do you have the same problem with other people too? I guess what I'm trying to get at is if you have kind of an underlying shyness or if there is a trauma that you are having trouble thinking about?

In either case some relaxation, or deep breathing exercises might help. If it is shyness, reassurance from him that he isn't judging you, that he likes you, etc. might help. Doing something else while you are talking might help too. I've heard of some people who do puzzles or color during sessions. He's got to do it too though, so you don't feel that intense attention which can kind of make some of us nervous.