Hi Narkiss,
It's good you can articulate your feelings. It's helpful if we can put a name on them, ie. anger, and also realise that they come and go.
You have been hurt and and understandably feel angry about that. Anger can be a good way to wake up to facts that we have sometimes been ignoring or explaining away to ourselves. Anger is a way to become focused on something that feels like an injustice to us.
I got so angry at my ex pwBPD, then at myself, then at him, then at myself - and so it went for a while. I had reason to be angry, just as you do, but I knew that beyond the anger lay something that had more long-term usefulness to me. Just had to cycle through it all lots of times, before I was able to move through it. And even now, if I made myself remember certain things he did, I could get angry and maybe even feel vengeful.
Anger at the other often becomes and is intertwined with anger at ourselves for putting up with the other. This too, is good to let yourself feel and explore a bit.
I'm not angry anymore -- at least not now. Just mainly trying to figure out why I let such destruction into my life and kept it there.
This is a very good question to be asking, Narkiss, and the one that will ultimately lead to healing. It is probably not one you will be able to answer all at once as we stay in unhealthy relationships for so many different reasons. It can take a while to get to the bottom of our own issues, because there is such a tangle of relationship issues that has obscured and confused the individual contributions of both partners.
Not to overwhelm, but I am wondering if you have you looked through the articles here?: Suggested Reading for Members Leaving and Detaching from the Wounds of a Failed BPD Relationship https://bpdfamily.com/message_board/index.php?topic=56204.0
Do you have ideas about why you let him into your life and let him stay there? What are some of them?
This is good:
I feel compassion and friendship, (I still love him) but there is no desire to rescue him. I maybe can plug holes, but I can't change him or give himself something he doesn't have and I don't want this chaos entering my life.
That's a really good recognition and distinction to make. We can love someone but have no desire (or ability) to rescue them from anything.
Most of us here do need to work on our desire to rescue ourselves. Proceeding with the same compassion you'd give him, or anyone else you loved, what would be the first step you might take, Narkiss?