Hi slaterkinner,
Welcome to the BPD Family and Merry Christmas!
I'm so glad you've decided to jump in and post. It sounds tough watching the dysfunctional dance your parents are doing and not be able to fix it. I hear how much you care about them and want them to be happy. It sounds like there are lots of layers to what is going on between them.
Are you receiving any Therapy for yourself? That might be a place to start, talk things through and get support from a professional in terms of your family dynamics.
I'm not sure you will be able to do anything for your parents. They are adults, you can't make someone else do something they don't want to do, the only people we can truly change are ourselves.
Only they can change their behaviors, as much as you love them and want to make everything all better for them, they have to see the problem, want to change/fix the problem, and then they have to do the work. You can't do it for them. I'm sorry I sound like "negative Nellie" I'm not trying to tell you that things are hopeless only that you are responsible for yourself, your behaviors, your choices, your feelings etc. You are not responsible for your adult parents and their happiness or unhappiness.
I want to share some information on Codependency the Karpman Drama Triangle that you might find helpful.
CodependencyInvolves putting others needs before your own, excessive people pleasing, poor boundaries, martydom, and control issues.
https://bpdfamily.com/message_board/index.php?topic=111772.0https://bpdfamily.com/content/codependency-codependent-relationshipshttps://bpdfamily.com/content/was-part-your-childhood-deprived-emotional-incestDo you see how you might be playing the role of rescuer (or possibly other roles) on the Triangle?
Karpman TriangleThe Karpman Triangle, described by Stephen Karpman is a very useful tool for understanding "stuck" relationship dynamics. The roles are Persecutor, Victim, and Rescuer. We may start in one position, but as another (or others) shift around the triangle, so do we.
https://bpdfamily.com/message_board/index.php?topic=108440.0I'd like to also point out the box to the right each item is a link to more information. When you have the time you might want to click on the links in the "Lessons" category.
I hope I have provided some food for thought, and know other members will be along (maybe a little slower because of the holiday )with their own insights, comments and ideas.
Take Care,
Panda39