This is the real truth. They DO fuse into one person; they take what they feel is important to the other, and they BECOME it. When the other finally figures it out, this blows BPD's cover. I feel that my ex is so angry with me for this specific reason - that I've blown his cover.
Very good observation. I think this is common with other PD people too. You become the enemy the moment you see their true colors. I believe that is usually when the smear campaign starts. They want people to think the problem is with you, not them. They want to keep their cover.
As I said, I don't have to worry about him coming back and begging for another chance, but I DO have to watch the gaslighting and baiting.
At least you know what he is doing. It is extra rough in the beginning when one is clueless about their tactics. Can make you question your own sanity.
I hope you are feeling better today after a not so great weekend.