Hello HopefulPenguin and a warm
These are hard relationships, when BPD is in the mix -- it definitely takes more than just entry-level skills and tools for the relationship to have a better chance. And there's a lot you love and appreciate about your partner, so despite the difficulty, it makes sense that you're looking for more right now than "get out now" messaging.
To give a high level of what my partner and I work with on the daily. She can be fun and playful, and almost instantly be activated because a door is open, our dog made a bark, her mom called her, something she remembered she forgot to do, a weird smell she notices, and other life stuff that happens unexpectedly. I try to be open minded and understanding when she is activated, but it's almost like reasoning and trust in me just goes out the door. It's almost like working with a completely different person.
The "instant activation" you describe makes sense. pwBPD (persons with BPD) can also be described as being chronically emotionally dysregulated. All of us can experience emotional dysregulation -- have we ever "lost it" in anger, been devastated by grief, experienced paralyzing fear... emotional dysregulation is a universal human experience. The difference for pwBPD is that it's chronic, not transitory. pwBPD have pretty impactful skills deficits when it comes to healthy management of the extreme emotions they experience, so instead of your partner being able to cope with "normal life stuff", she gets emotionally activated at things that you or I might experience as a 2/10, not a 9/10.
She will resort to devaluing my efforts in our relationship saying I'm lazy and worthless. She resorts to punishing me by hiding things I need. I will get kicked out of the house or car, if she is feeling activated. All of it has been taking a large toll on my mental health.
Tell me some more about that -- am I tracking with you that after she gets activated, what she does then is devalue your efforts and punish you (like, one follows the other)?
Do the two of you live together in the same house?
...
Just a couple more questions, to get a better sense of your situation:
How long have the two of you been together?
And would you say that your biggest issue right now is what she says (verbally denigrating your efforts), her hiding things you need, her kicking you out, or something else?
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kells76