I have been recently cut off from someone I considered one of my best friends. We got into an argument after I felt frustrated that this person was not communicating to me and was isolating themself. They weren’t treating me very kindly for the past week so I told them how I was feeling. They responded that they felt they have been needing space. I was frustrated that this person didn’t tell me they needed space until we got into this argument. I would have gladly given it to them if they let me know their circumstances. I was so emotional, I used a harsh tone of voice and told them to leave. I value communication a lot, so them not telling me anything was an indicator to me that our relationship was going to fall apart unless we worked something out. At this time, I had no idea they might have BPD and their sudden change in behavior made me upset and confused. The next time this person reached out, they cancelled a big commitment we had together. I asked them if they wanted to talk about it, and offered solutions, not thinking anything of it. They offered a short “no”, and never spoke to me again. I tried calling, writing a letter, texting to figure out what our boundaries and relationship was at that point. I didn’t want to cross any boundaries if they felt they didn’t want me as a friend anymore. I wanted to know for myself if I should keep trying or move on. They never responded. I’m going to stay out of their life to not bother them now, but I still feel awful for having that argument be the end of our relationship. If you have constructive criticism, I’m happy to hear it! Please be gentle bc I’m sensitive. I want to be a better friend for anyone I encounter who has BPD or has BPD symptoms in the future.