I'm so sorry, Lupita.
I know you feel so fragile around the area of other women.
I really am sorry that there isn't enough security there. I don't know the answer, save that the boundaries are so open and closed at the same time. It's really hard to figure out flexible, healthy boundaries, with our legacy. I really feel for you in this.
I do understand it some...I was very friendly with my ex, my D's father, and I was so grateful for it. It was a relief to me that we interacted so well after the divorce (probably because I carried a lot of guilt). But when he remarried, one day his new wife told me that our fondness for each other was distressing for her, and made it difficult for them to fully make their way.
She was telling me about a boundary (didn't even know what they were called then). But I sensed it was a fair and appropriate thing to point out. I changed my demeanor thenceforth around him--remained cordial-friendly, but not intimate-like-old-close-roommates friendly, and then things worked better.
(Well, in the long run, they were miserable and wound up divorcing, but it didn't have anything to do with me, thank heaven.)
The fact that people will make dramatic entrances and exits to show their boundaries is so sad. And, kind of like high school.
I wonder if your therapist can help? I think CB has, as always, told you some profoundly wise things to think about. For me, the very biggest thing she said was...TIME.
I don't think you're giving yourself enough time.
love,
Hops