For all these people who feel she should tell her dh if she wants to stay with him,
if you were in a relationship where you had no idea your dh had this secret but he knew he wanted to be with you and knew he made a mistake and so decided to tell you.
are you telling me you could forgive and move on? that you would not be broken into a million pieces and feel so let down and confused by what you thought was a happy marriage? would you be able to carry on without paranoia, jealousy and still be able to trust him. i doubt it. it would take alot of councelling, time and then it may not be enough so you may just end up splitting up.
it would have a negative effect on your relationship full stop. so i just can not see other than the other person knowing what the other person done, what good it is to tell?
i am not saying this is what i would tell every woman who has had an affair to do. but in this example, it happened once (even though she could see it coming a long time) and she said she knows she wants to be with her husband, dh hads no idea so this could be one very bad mistake that she can take to the grave with her. her guilt will be her punishment and she will make every day work for her and dh because she loves him and is so sorry for what she done.
this is a lesson for everyone, like she said in the beginning, it started with a spark, when you see it - run! i've been there before and you need to take control as soon as you realise this. it was in her control and she could have been telling a much different story.