Might work but what’s the point as the BPD will go back to devaluation mode? If they painted you black to the point of leaving it’s most likely long term painted black.
I am currently still interested in saving my relationship. I only recently (2 months ago) discovered this as a possibility. I now understand how my behaviors have been enabling and codependent. My hope is my behavior changes will improve things - but that is hope, and I cannot control that.
My wife may have long term-painted me as negative, and I cannot control that.
Regardless, we have two children together, so there will always be some kind of relationship. For my kids, my wife, and me - I want that to be as good as possible given the circumstances.