I am struggling to know how to support a good friend in the aftermath of their break up. He has, at the very least, emotional/personality problems, and at the most, mental health issues and seems to have undergone something pretty close to a nervous breakdown. However, he doesn't appear to be a risk to himself or others, and seems to be functioning.
My friend has moved away from him, but doesn't seem able to detach herself from ex, feels responsible for him and very upset by his behaviour. I tend to think that she needs to draw a line, or she will never move on with her life. Am i being harsh? TBH, their relationship seemed a bit dire even before all these issues came up - he did some fairly questionable things, so i tend to think she's not even in a place where she 'owes him for the good times'.
What should i do? Thanks in advance.