When I broke up with my ex, I stigmatized and blamed her BPD for the breakup.  I ended up making up things that didn't happen to justify this and then I completely ghosted her.  I later found out she ended up homeless for a bit after we broke up.

Several months later I learned that I have BPD.  Once I started to work through this, I realized how badly I mistreated my ex.  I tried to reach out to my ex and apologize, but she refused contact and blocked me.  I feel like complete human garbage right now.  In a way I deserve the pain I'm going through right now, it's only a fraction of the pain I dished out.