BS -- she knows better. Remember she was telling the guy to be careful as you were in and out -- she KNOWS you would be pissed and that she was WRONG.She has told me she has never fooled around and has never even thought about it I really don’t know what to think. She said she didn’t know she was doing anything wrong. She is married and should know better I think.
She knows this -- she is trying to appease you. DO NOT allow her to do that.
You need to be serious about this and tell her it either STOPS or you do (i.e. divorce) and mean it.