I have kind of caught my T lying, but it's a tricky thing and usually related to confidentiality issues. My sister sees him as well, and there have been times when she has told him something (which I know, because she TOLD me she told him), and then when I bring it up, he will pretend like he's never heard about it before. I know that this is because he is trying to protect her privacy but it always irks me a little that he is capable of being deceptive at all. I don't have any reason to believe that he has lied to me about other things, and I never confronted him about the lies that I am aware of, so I have no idea what his reaction might be.