When I read your threads I see me in them. I wonder if we had the same therapist. Mine left after 4 years after assuring me over and over again he wasn't going anywhere. I still have his emails. He would over-share, and do whatever it took to help me attach to him, then throw a curve ball because I was over attached. He gave me medicine he got from his doctor wife since I had run out, offered to pay for my meds, talked a bit about his sex life with his wife, offered to give my son an expensive gift for Christmas since I didn't have the money. It just went on and on. We talked about life, giggled together, etc, but at the end, he started treating me like shit. He told me I had no more trauma. Huh? How could that be? Then he said if I did, to tell him what it was. It took me a year just to get the trauma out. Then he told me he was leaving, and I pretended to be happy for him, but I became completely retraumatized. I was a complete mess for over a year. My symptoms became worse than they ever had been.
This doesn't mean this will happen to you, but now I have a therapist who is leaving, and I am happy for her! I'm actually very invested in one of her projects, so I will be volunteering there. Even if I weren't I would miss her, but I would not fall apart, since she has always been up front and honest with me. I hope you decide to ditch him before he causes you more strife. Therapy doesn't have to be like that.