Hello Amy: Since this is your first post, here on PC, welcome to PsychCentral! I hope you find PC to be of benefit. PsychCentral is a great place to find support for mental health concerns. Things move pretty quickly here though. Sometimes it can take a bit of time to become known. However the more you post, & reply to other members' posts, the more a part of the community you will become.

One other forum, here PC, that may be of interest would be the relationships & communication forum:

https://forums.psychcentral.com/rela...communication/

And then here are links to some articles, from PsychCentral's archives, that may be of interest to you:

https://psychcentral.com/disorders/b...ng-with/?all=1

https://psychcentral.com/lib/dealing...lity-disorder/

https://pro.psychcentral.com/exhaust...-a-borderline/

https://psychcentral.com/lib/dialect...isorder/?all=1

https://psychcentral.com/lib/the-emo...lity-disorder/

https://psychcentral.com/blog/6-gift...lity-disorder/

You mentioned your partner is about to leave you. I don't know if there is any possibility of saving your relationship. However, on the chance there is, here are links to 3 articles for your partner too:

https://psychcentral.com/blog/living...lity-disorder/

https://psychcentral.com/lib/how-to-...sorder-part-1/

https://psychcentral.com/lib/how-to-...sorder-part-2/

My best wishes to you...