Hi Close to leaving and

It makes sense that after 12 years and no meaningful changes that you would decide to close this chapter of life. Untreated PDs are so challenging and make healthy relating very difficult.
I need to end this relationship but I am hesitating because I know how angry he will be.
Tell me some more about that. What does it look like when he's angry? Is there something you're afraid of for yourself, or for him? Given that (by definition) you won't be living together any more, what is it about the likelihood of him getting angry that brings you hesitation?
I have so many thoughts going on in my head because my family, friends and co-workers have all seen me go through this relationship and the ups and downs that have come with being in this relationship.
I'm curious about this, too -- are you reflecting on things your friends and family have thought or shared over the years?
...
You're in a good place to plan and process the end of your relationship, with others who really understand that this probably won't be a boilerplate "we just grew apart, let's stay friends" kind of ending. There can be nuances to ending a PD relationship and we'll be here for you on your journey.