This would be a huge trust violation for me. I really don't know if I would be able to stay with a T who did something like that. I don't think he ever should have agreed to see your H. He could have made referrals on the phone or something. But I just don't think that this is right under any circumstances, and it raises serious questions in my mind about the quality of a T who does things like that. If your T doesn't change the situation immediately you may have to tell him that you have to leave. I just don't see how you could trust T to really keep it separate.