Spectre said:
.... She could have easily lied and prolly never got caught.
Is this REALLY the truth? I mean is she the type of person that could keep a secret such as this from you? Having a one-night stand on a business trip w/a total stranger is one thing. But to carry on a SIX MONTH AFFAIR is quite another.
What I am trying to say is, is your wife the kind of person that could do something SO DESPICABLE as to carry on a SIX MONTH AFFAIR without you ever even having an inkling that something was amiss?
If this is the truth then either:
A. Your marriage was over a long time ago and you just didn't realize it. (This takes TWO - meaning you had emotionally abandoned her LONG BEFORE "her grandfather died".)
B. She either always was or has become the kind of person that lacks a soul. (This also takes two - as in if she was this way prior to your marriage and you knew it but married her anyway then you have really no one to blame but yourself OR you guys have slowly but surely broken down ALL COMMUNICATION and have privately carried on "your own lives".)
Children and an adult life time invested COMPLETELY CHANGES the situation of someone who is much younger and does not have all of these things in common. This is not minimizing pain, but speaking rather about the course of action to be taken AFTER THE FACT.
There is a lot more going on here than you have posted and to post it all would take forever I am sure. But from what you have written I think you probably know the truth about your situation.
Infidelity is NOT a reason to end a marriage. So might I suggest (only because you asked) that YOU BOTH get counseling TOGETHER so that you can properly assess what it is that you two want to do. And TRY LIKE A MOTHERFUCKER to resolve your issues whether you both decide to have the marriage remain INTACT BUT WORK YOUR ASSES OFF TO FIND YOUR WAY BACK TO EACH OTHER - or let it the fuck go and separate LIKE ADULTS. Your children's needs in this case, far outweigh the needs of you two as HURT INDIVIDUALS.
Bottom line is YOU BOTH have to try a find a way to be happy. Obviously neither you NOR your wife have been very happy for some time. Nobody just goes out and has a 6 month affair "all of a sudden because their spouse was traveling and their grandfather died". Whether you are happy separately or together this is paramount FOR YOUR CHILDREN.
NO CHILD CAN EVER BE HAPPY UNLESS THEIR PARENTS ARE ALSO HAPPY WITH THEMSELVES.
I wish you strength, patience and hope that both you AND your wife find your way.