My Husband had an affair with "my best friend"

[Gina]

This is a tough situation to be in, but as most have said she is not your friend, friends don't do this. If this was an affair where you do not know the woman, I would say she is not the only one at fault. But you have a double whammy, being she was a friend. You didn't say if she is married, and if so does her husband know of what went on? The only advice I will give you is you can no longer be her friend, I would never trust her again no matter what. No one can tell you to leave your husband or not, only you know that answer, you should follow your gut. Your gut never steers you wrong. Just remember that life is short and you must be happy with yourself regardless what you decide..