I know your post is focused on healing and moving on. I guess my questions are more about how this happens in the first place. Would be interested to hear your thoughts on either part.
After my long-term marriage to a BPD spouse ended, I started dating online and met someone overseas. And at first, I saw some worrying trends- she idolized me, she was fiercely strict on her son, she got angry at family and exploded, etc. But none of this was ever directed to me except in a few cases of jealousy (which is another red flag).
I kept thinking though, could this be another BPD relationship? Or am I just being paranoid?
I've been married to this person for 9 months now and at times, I still question if BPD can be in the mix. But the beautiful thing is that the skills we learn on this site work regardless if we're talking mental illness or not. So when my new wife feels invalidated or brushed aside, I stop whatever I'm doing and love on her. And 99% of the time, the problem never actually becomes a problem.
Every now and then my wife will get her feelings hurt and give me the silent treatment for a little while. This includes dirty looks, aggressively pulling away when I try to touch her, and general pouting throughout the day. But I'll kiss her on the cheek anyway, tell her I love her, and then I'll give her space to work it out in her own mind. Usually by the end of the day she's apologizing and back to being her normal goofy, fun-loving self.
No matter what happens, whether it's BPD or not, I validate my wife's feelings and we have a great marriage. And I think that's the key for any relationship, we're there to love and support the people we care about.
Does my current wife have BPD? I really don't know, it depends on what day you ask me. But I do know how to love her and validate her feelings, so I'm not too worried either way.