I was less apt to confide in friends when I was married. The one friend I am speaking of is a friend who I have had for decades. I will admit I have really slid downward in the last few years. My friend is still married and has a large extended family and so a lot of support. I think, in retrospect, she just got sick of me having problems in the last few years. Also, truth be told, I completely forgot she took medication for depression because I have never taken medication for this and don't really think about whether or not others do. It was just something she reminded me of recently. All I can say is that having mental health problems when single seems a lot harder than when married. I had periods of mental vulnerability when married but having someone else there who has your back can make all the difference in the world.

The friend I am speaking of here tried to commit suicide when she was a teenager. She then married (still in teens) and for decades has been mostly stable with no more suicide attempts. However, now she is very unhappy in her marriage but won't leave because she doesn't want to be alone. Maybe you are right about people with mental health problems not making the best friends to one another, but sometimes that is the person who understands.