hi Sheila,
i struggled with this dichotomy too. for me, it wasnt so much compassion as it was depression, feeling rejected, putting my ex on a pedestal, that sort of thing. anger felt better. problem is i couldnt keep it up forever, mostly because i was conflicted, and anger was not the only thing i felt.
it was when i gave myself permission to hold many different emotions (anger, sadness, and everything in between) without judging them, but just observing them like leaves falling from a tree, that a real turning point in my recovery came.
Wisemind is the number one psychology tool that we teach here (number one on the list of tools at the top of your screen for a reason). it is the center of our emotional mind and our logical mind. anger can be a motivator, a tool, and it is one of the stages of grief, but we can also get into trouble when our emotions rule. the thing is, you can have both compassion and anger. you can have compassionate but firm boundaries, for both you and him.
You’re in Wise Mind when your emotions and your thoughts work together so that wise action is easy, even when your life and/or circumstances are really hard. You’re in Wise Mind when you can meet each moment of life as it is, not as you would have it be, and respond to it skillfully.
so when you start to weaken, i would say, dont automatically reach for the anger. reach for mindfulness and Wisemind, and make firm decisions based on your boundaries and values.
more here:
https://bpdfamily.com/content/triggering-and-mindfulness-and-wise-mind