Has there been any 'closure' session with him? Or a session where you could tell him all these things i.e. the inconsistency between his words and actions or any sort of explanation. It might help to get things off your chest with a face-to-face, even if mediated by a third party.

I don't think sending texts or emails would be helpful. He might use that against you when you are the 'injured party', so to speak.

I am sorry he behaved so abhorrently towards you. He comes across as a liar, pure and simple. Plus, he cannot even have to decency to be straight with you. I know you are in pain but could you really work with a man who lies and is such a coward?

You deserve much better than him. I am baffled how he can call himself a 'therapist' with all the harm he is doing and his callousness in just shrugging it off. I believe you are better off than being with someone who is not/cannot be genuine and authentic.