Dealing with a Toxic Friend and Mental Health Issues

I already have crappy mental health issues. I’m tired of feeling ambushed and vilified by someone who calls themselves a “dark empath”. Every so often, I come across Borderline Personality Disorder info. Then I get tunnel vision and want to learn more. Then I have daydreams where everything my toxic “friend” has said to me and about me is because they secretly think I have it, and have been emotionally abusing me because of it. In real time, they’ve been gaslighting me, projecting, & acting like it’s all me—that I’m the problem for all the drama. 😤😢😡 These daydreams make me so infuriated. Because it adds to the hurt and anger, the distrust, wanting to walk away for good without caring what they think… The thing is: it’s a daydream. It’s not even real. It’s just a fantasy my brain makes up based on anxiety from the information about BPD I got distracted by, and added with the memories and emotions from our last encounter. I hate it because I’m questioning my mental health and my intuition. I feel like I’ve taken so much crap from them and only realized it recently. & now I feel like I’m paranoid. 😖