Yes, same here - my ex has been with my replacement for about 2 1/2 years. However, we were together for 8 years. The first few years were good. The rest were hell.
A lot of my journey has been trying to look
clearly at my role in the demise of the r/s. What I did wrong; what I could have done better.
I have a list, to be sure. But I also know that there was nothing I could have done to change the progression of the disorder in our r/s. Her new partner will have to deal with the fallout from the disorder as well. Nothing has magically "changed" for my ex. Yours either:
She said that BPD had wrecked every relationship she had ever been in.
Indeed.
Also: I sense a little negative self-talk here; be careful:
She has been in a really steady relationship since we broke up though (they got together a couple of weeks after our break-up, and moved in together a couple of months later) so that has been tough to witness. I read here that lots of people are in that same boat though-- the seeing their ex seemingly maintain a successful relationship after theirs had gone through the idealization-devaluation-discard pattern. It is confusing.
You're telling yourself a little story here; that their relationship is "really" steady; that she's "maintaining a successful r/s." The real underlying thought to this is, "Wow, she's in this solid r/s that seems to be successful; maybe I'm wrong about everything; maybe she really loves him and everything's great and I was a lot of the problem."
This is the truth: you have
no idea about the state of their r/s. You're telling yourself that ^ little story and it's making you feel terrible, most likely. Why are you doing that to yourself?
Tell yourself a different story:
My ex has BPD - she knows it; she knows it wrecks all of her r/s's; yet she doesn't do anything to get help and jumps from r/s to r/s instead. That's sad. Nothing will ever change for her, and I'm glad I and my kids don't have to live with a difficult, unstable woman any longer. I loved her but I love myself and my kids even more. I'm going to continue to heal from this r/s and build a future that includes happiness for myself and my kids - and hopefully loving, stable r/s with someone who really loves me!