WC I am so sorry. I had a mentor once who acted in a similar way, lying and manipulating intentionally and I had thought on some level that she was actually cared about me and considered me a friend. I felt soo upset to have to look back at her actions and reframe them as manipulation tactics or whatever she was doing. Although, then I realized there had been signs I had overlooked and became mad at myself. I can't even imagine what you are going through, if I was so upset over that, and this is someone you thought was your best friend for so long. Really, my heart goes out to you and I hope he starts behaving so you can wrap things up without unnecessary stress. The fact you are handling this at all is super impressive honestly, I imagine I'd just break down and not be functioning.