Hi Gnr,
I'd like to welcome you to the group. A pwBPD will blame others and the world for their problems. It sounds like good news bad news, it sounds like he was serious about going to therapy if he was going a couple of times a week. It's like anything else, sometimes you have to try to quit smoking, drinking, getting help for yourself more than once for it to stick, change can be very scary for some people. That being sad, are you still living together? How have you been together for? How long have you split up?