I(25M) was reading up on bpd symptoms because I went through a mental illness rabbit hole on the internet because I wanted to be as supportive and knowledgable as I can if I start dating again and a prospect partner happens to have a mental illness.  Anyways, I was reading up on borderline personality disorder and when I started to read some of the symptoms, I instantly thought of an old friend(22F) for some reason.  I’m not entirely sure why this person came to mind when I was looking at bpd symptoms and I feel like there may have been a reason that happened and I would like to receive instructions on how to proceed with this.  Should I say or do something?  Is it even a good idea at all?  Maybe I’m overthinking but I’m honestly not sure at all.  I really care about this person as she and I have been through a lot together and I just want what’s best for her.