I see nothing wrong with the first group of comments. He is using positive reinforcement because you have low self-esteem. I would say the same things to a friend who is in your position. "Look at you - you're attractive, men will be lining up!" etc.

You're in a very vulnerable position right now because you don't want to be alone, and your T is a kind of knight in shining armor. He has helped you to end a marriage that wasn't working (saved you). You feel grateful. Who wouldn't????

I don't know about the more explicit sex comments. How much time do you spend talking about sex? Are you unsure of yourself sexually? It's hard to tell how these comments fit into the general session conversation. Is he just lobbing them in from left field, or are you very sensitive about the subject?

You say you knew the business about him being booked for 3 weeks was coming, but you don't know why. If he's a good T, he knows that you're liable to see him as a savior and take the positive reinforcement personally, and think that he is coming on to you. He may be intentionally putting some distance between you to stave that off. Actually, I think he has a fine line to walk to try to build up your self-esteem without you perceiving as personal interest.

I think the bottom line is how uncomfortable all this makes you. I don't think that 3 months is long enough to have built up a lot of trust toward him. So if you're really worried that he may make advances toward you, perhaps it would be best to end the relationship and find another T. But it would be a shame to lose a good T that you like because he could provide some good support in the coming months as you adjust to a new lifestyle.