I'm so sorry about the pain and confusion Harlygirl There's a lot of pain and suffering from a borderline break-up
.I have learned that he has been promoted at his workplace. It could be an indication that he has returned to therapy.
Let's look at this.
Borderline personality disorder is a misunderstood and complex disorder. It's an attachment disorder and it is triggered by intimacy as you already know. It's emotional based and they can be talented and be professionals like psychologists and have successful careers. The acting out is usually not in public but behind closed doors to the people that are closest to them, an SO, family and children.
His promotion at work isn't attached to the disorder, the disorder is triggered by intimacy.
However I find my self confused by my own feelings on this... .Why do I feel so left behind... .so excluded?
It's tough I've been there. What I found the most painful is that my voice wasn't heard, I was invalidated and I couldn't understand the way that my ex left. There was a smear campaign and I was split black and she went radio silent after having a long history together. As if I didn't exist and she disappreared. It's hard Harlygirl
Your ex doesn't cope like you or I, he copes differently, maladaptive coping skills. It hurts you that he has moved on as if what you had together never existed?