I see that BPD can come with NPD as well and I think that was my ex. With that amount of self confidence, he sure needs a lot of validation and when something does not go his own way, he would split and give the silent treatment. Frantic efforts to avoid abandonment when his first ex dumped him, so he would dump anyone first afterwards before the relationship could end. Note that he has no close friends or long time friends due to the BPD tendencies. His anger is borderline and explosive (same as mine). I don’t really believe in his “love” due to the way he treats people. Most probably the love is an FP phase or infatuation. 

To be honest, I don’t mind the fact that he abandoned me and wants to date around but it’s hard to convince him to go to therapy or at least a psychologist. He keeps repeating the same cycle with other girls too.

Also I have BPD as well but not with NPD, but with DID.