I'm sorry you've been hurt / dumped by someone with possible mental health issues.

I personally see attempting to diagnose someone in a "negative" way who has hurt you, on a forum where ppl are diagnosed w/ BPD, to be hurtful to other people here.

It sounds like he's not in a place to be in a relationship. Or maybe you guys weren't right for each other.

Regardless, I hope you find some good ways to cope with your feelings about this.