I'm not sure how I'm feeling about this or not hat to do. Here goes.
So a friend of mine who I have known for a couple of years (let's call her A) finds out I'm friends with (let's call them B) who I have known for 4 years. A and B know each other through a mutual friend of theirs. Both A and B are female. I am closer with B than A. We spend a lot of time together, look after each other's kids etc. About a month ago A realised I knew B she started telling me some pretty personal stuff about B, including, amongst other things, the fact that a long time ago B was sectioned. It was following on from an extremely tough time in her life. (B has previously told me about the tough time but not about being sectioned) I quickly shut the conversation down and said that B hadn't shared that information with me and that I felt it was not A's place to tell me..
I now feel bad that I know this and B does not know I know. I'm mad with A for telling me and putting me in this position. (I now know not to trust A with any personal information)
So what do I do? B has made a decision not to tell me, she's had an opportunity to do so when discussing the tough times and of course that's fine. Totally her decision which I obviously respect..But I do know and I don't like that she doesn't know I know.
I'm sure at some point B will work out that I know A and will wonder if I have been told. Is it better to bring it up and let her know I know? Or to leave it and risk it coming out later.
I wish I didn't know.