I had an ex who had BPD. I would tell him verbally, "I am not leaving you." or "why are you sabotaging your life" or "you know you are being irrationally jealous."

He would agree with me and then go about his BPD behavior even if he knew it would cause us hurt.

I have tried to stay close to him over the years, but he push/ pulls constantly.

It is very frustrating.

Oh well, maybe in another life, huh?