Just discovered recently that a close friend has been having an affair with a married man for some months. She is single and as far as she is concerned, she is not doing anything wrong. I am really upset about it, more with her attitude as she seems to think that if the marriage breaks up because of it, it has nothing to do with her. This guy has kids who would suffer the most if things go belly up - how can she not see this? I feel awkward being friends with her while she continues this relationship but she has always been a great friend to me so I guess I should just butt out and mind my own business till it passes. What do others think?