On this forum I have seen different shades of BPDs or/and NPD traits and at times a cross over of different PD behaviors.
So much that it drives me crazy, just breaking down our conversations and his reactions to recognize the commonalities with the disorder (Yea, i get quite analytical - my jobs required me too)

Did you sense 'Insecurity' in the pwPD and what role does it play especially during the devaluation and discard phase?
Also, my exbf was quintessential passive-aggressive person. How closely related is this to BPD?