Hi thatwasthat,
I tried a search for charred, and found some references to attachment theory, which a number of members have found useful in explaining their attraction to the pwBPD, but nothing I'd consider a "long" post.
There was also this, which I thought was pretty interesting, a member quoting another member (no link though) about reasons why they believe they stayed with their partner.
https://bpdfamily.com/message_board/index.php?topic=289393.msg12724120#msg12724120And whether we find this post or not, would you like to tell us why you think you were attracted to/stayed in a relationship with someone with BPD, and we can ask you some questions and share our experience to help deepen your understanding?