Hi there. I am no expert but...to me it sounds like the BPD was his piss-poor excuse for his own criminal behavior. Seriously. The comments he made the previous night about 'seeing people as good or bad' and 'sex being his way of dealing with things' sound like they were merely a pathetic excuse for his *intention* of doing whatever the heck he wanted, whether you agreed or not.

I am really sorry you experienced that.

Ultimately, I think if he didn't have BPD he would have made up some other excuse for his behavior.