When we broke up my uBPDexgf put a post on FB that said "Signing off FB for a while" and I thought, why would anyone post that? Wouldn't you just stop using FB? This was just after she had broken up with me and requested a few weeks of NC, then she posted on FB saying "I've dropped my bundle" which made me contact her. Again, why would anyone post that on FB? Anyway, I think she's back with her ex who has chronically low self esteem and will be treating her like the little girl that she is. Her parents treat her like a little girl too and we all know how little girls crave attention, good or bad. Well no more attention from me anymore.
Everything about a borderline revolves around abandonment and trying to avoid it. I always think it's funny how a borderline will tell us they will never contact us again by sending a caustic contact; a 'normal' person would just not contact. It's bait, a ploy, and he's been able to recycle with you before, so why not try again.
All the drama is a result of the push/pull nature of the disorder, and the messages now are called an extinction burst in BPD-lingo. Read: he's freaking out because he thinks the abandonment he's terrified of is happening, and that will continue until he gets tired or finds another attachment, another shiny object to take his attention. The best thing you can do if you're committed to being done is not respond, act bored and disinterested if you do end up talking or whatever, and start to focus on a future without him. Pretty pathetic that we just need to play dead until they go away, but such is the disorder. Take care of you!