A tough, but needed decision. Be strong in your convictions. He will most likely attempt to work on you at some point. That is what they do. You are well armed with what is to come. And you'll do great.
When I went to the rehab place with my wife, there was an "event" I needed to clarify with the MD on staff. I expressed my concern, and she said, "there's a fair amount of misdirection in these relationships". Right on. I'd not heard that before. But she was right. Use caution and be on the alert for the "misdirection". it will appear.