Your comments about control, and showing approval/disapproval are really interesting. So, do you think that he was purposefully not smiling as a way to avoid showing approval or positive reinforcement for things you were saying?

That does seem *odd* to me. Smiling seems like an easy way to help someone feel more comfortable and safe, especially if it's the first time that you've met!

And... what do you think the chances are that he was just too nervous to smile? I just met a new T today too (!). I think he smiled OK (I didn't notice him not smiling), but I had mentioned how, a long time ago, a T that I saw (once) was awful - and had a very constrained, professional mask on that came down when I mentioned something he was interested in (the change was jarring to me!). This new T mentioned that he gets nervous meeting new clients, and that if he looks super serious, it's just that he's focusing and trying to put together the things that I'm saying! I thought it was really nice that he was willing to admit to being nervous!

Good luck. Do you think another visit would help you determine for sure if he's a good fit, and whether his lack of smiling was a one-time thing? Or, do you have a few others lined up to talk to?