I totally agree with Xenia.....he made the chioce to have an affair whatever he sees as his reason HE CHOSE to do it he always had the choice to take you to one side and sit you down and say "I'm not happy because......." he chose not to do that and you are supposed to read his mind????
Marriage is not akways easy, especially when children come along, you can quickly find yourself in a place where you (both of you) have let life get in the way and you don't even see it happening until crisis hits,....like now- that's how I viewed my situation. I was completley and utterly oblivious that there was a major problem ( it was in the end HIS major problem that became mine) he chose to deal with it by escapism, to the bed of another (no kids but married and in need of a shoulder to cry on).
Please hurtwife do not let him DUMp this on you....yes there may be things about your relationship that need looking at and part of that may be down to you but this is a partnership HE is as equally responsible for how it works and he is 100% responsible for the choices he makes in how he deals with problems he perceives.
Having said all that if you feel your relationship can be saved and you want to work on it then go for it. For me I felt this was oour test, our one huge problem I could have kicked him out and slammed the door in his face, he deserved it but I also saw my dh, my best friend acting like someone I didn't recognise, he was completley troubled and tormented and confused....so I dug deep, put my feeling to one side for a while and hung in there for him (I kind of had this instinct that I really did not believe that he wanted the path he'd taken)
Eventually (and it took longer than he deserved...before he stopped messing around and strated telling the whole truth...but we turned a corner.) He pput himself into counselling and "came to his senses" He then had to work (and still does) long and hard at convincing me of his sincerity.
3 years on I trust him again....98% I'd say. he still says when we talk he cannot believe what a fool he was and how he risked so much for so little . he also says he's so glad he had me because he believes so many would(understandably and deservedly) have walked away and left him to rot in arelationship that would have lasted a nano second because it was not real (although in his confused state he thought it was)
Hurtwife if you truely believ your dh is still there for you.....hang in there...but you have to talk to him, to a counsellor...he MUST get his head straight....and you must make changes in your life. with 4 kids it's very easy (we have 3) to lose each other...you just stop making time for each other and you start leading seperate lives and you don't even see that you are getting futher and further apart. BUt this can intime become positiev, you can (like others have also testified) become closer and strongre, we have. You are strong and at this moment I feel you are the strngth for him as well.