This is a psychology article about limerence and ROCD. I think it addresses issues touched upon in this thread. I put trigger icon because it may be triggering to view emotions in this light. I find it pertinent for me and triggering . I hope you find it helpful.

And just for the record… My grandma actually coined the term of limerence as far back as I can remember (early ‘70’s), because she had it, but she called it something in Yiddish that meant ‘unrequited obsessive sickness’. Actually, she had both limerence and ROCD, others in my family too, and so do I .

You mentioned you have BPD, and I have traits, emotional issues, probably OCD.

Limerence And ROCD: Signs, Causes, Treatment