I have a friend and we’re pretty much codependent because we have no one else and are afraid of being lonely. she definitely has bpd features and gets mad really easily. I’ve gotten better at not over sharing and using people as my “personal therapists” when I am feeling down or overwhelmed. And I’m realizing she has the same problem. And I’m in a much better headspace and better at just staying more mindful so I’m not in a chaotic mood all the time when I’m with her in classes. When I’m not in a chaotic “emotional mind” out of control mood I’m more subdued and stuff she says to me makes me more uncomfortable and trigger me. (She talks a LOT about mental illness and how she’s always mad at her boyfriend for things I’m starting to realize are irrational) I feel like I can’t be myself. How do I tell her that stuff she talks about triggers me and I would like to talk about different things and not repeat the same mistakes with people I’ve made in the past ???? She is already mad at me because I’ve been distancing myself more and more. 

TLDR: I’m getting better at managing my symptoms and finding it hard to relate to my friend who is unstable and they make me uncomfortable. How do I tell her/set boundaries