My T does this, mostly I think because I have such a poor sense of my emotions. So I'll describe something painful, but I have a flat affect, very numb. He will wince and look pained and I'll think, Oh, maybe that was a hurtful thing that happened; maybe I might feel hurt?

I think you should talk about this with your T. I was afraid T was mocking me, or faking his reactions, but he explained to me what he was doing and why--showing his reactions to what I described--and then I felt more okay with it. Now I like it--it shows he's involved with what I'm saying.