...that she had an affair with a married man?
She never told me, even though it was with a man we both worked with, even though we've been really close and (I thought) told each other everything.
I think it's affecting me because
a) I hold strong views about people that have affairs with someone who is married.
b)she didn't tell me (maybe because of point a)
She doesn't know, but I feel like I don't know her anymore, she's not the person I thought she was, and I'm not sure if I friendship can carry on the same.
Is it unreasonable of me to feel like this?