Run and do not look back, no matter what.
I don't need to shred my nervous system with details because we all have, or will have the same story anyway.
This is to anyone who thinks their PWBPD is special and worth fighting for. I promise you, they are not, and you need to fight for yourself.
Run before the abuse escalates. Before you've ruined your credit, your job reputation, and rental history. Run before you destroy your teeth from clenching them all night and before you are prematurely aged and gray. Run before they manipulate you into ruining all of your healthy relationships. Before you abandon your hobbies, individuality, and everything you love. Run before you lose a single night of sleep. Run before they convince you that you are the crazy one.
If their poison has already started to seep inside you, please know that it isn't too late. Get out now, and get a restraining order if you can. Talk to a professional to heal the damage they caused.
Do not go back no matter what. Do not ever be swayed by their fleeting bouts of sweetness and promises to change. This is a trap. Do not fall for it.
So many of us didn't listen until we were hurt badly.
I don't know why they are incapable of change, and frankly, I don't care. A part of me believes that they are inherently evil. Just run, and please don't look back.