re: "
I believe her and I both have BPD."
I've read that people with BPD have an increased probability of getting into a relationship with someone else with BPD (or someone with NPD, or someone with codependent traits/a heightened self-sacrifice schema).
I'll note that a relationship with someone with BPD (or NPD) can sometimes be so unstable/difficult that it can result in BPD-type behaviors in a partner who doesn't actually have BPD. But I'll mention a couple options I became aware of, if you do have BPD and want to persue therapy for yourself. Many people are aware of Dialectical Behavior Therapy as an option for treatment of BPD (I think it's the most widespread treatment modality for this), and many are also aware of Mentalization-Based Therapy (which also shows good efficacy). I recently came across a network meta-analysis that suggests that Schema Therapy might have even greater efficacy than DBT in treating BPD:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10277776/"
ST [Schema Therapy]
appeared to be more effective in treating borderline severity in adults diagnosed with BPD than several other active treatments, including CBT, DBT, and PDP, however, these comparisons were only based on three trials, so this should be considered with caution."
I'll note that the dropout rate for Schema Therapy appears lower than for DBT. Though I'll also note that many localities lack clinicians trained to provide Schema Therapy.
Also, I came across a woman who provides coaching for BPD recovery
https://www.youtube.com/watch?app=desktop&v=Pcy2S-8MkOg I first came across her when I saw her mentioned as a useful resource by a therapist who treats patients with BPD (and I've spoken with her).
Welcome to this board. I hope you find support and tools for healing here.