M.W.
Hi M.,
I am so sorry to hear this. I would be absolutely devastated to find out something like this. But I'm a firm believer that marriage is for life. We swore before God to love each other till death do us part and plan on upholding that. As hard as it's going to be for you, it sounds like you two are starting down the right track.
I would stop asking him questions about her. He is hurting as badly as you are right now. For some reason, he felt that he wasn't getting what he should from you and he turned to someone else. I'm not saying that he was right but (at least at the time) he felt vindicated about it. You are just making yourself feel worse by comparing her to you. YOU are his wife. YOU are the mother of his children. YOU are the one he's choosing to go through counseling with. YOU need to help correct why this happened. I HIGHLY suggest that you read the book "Love and Respect".
Very very good reading. I believe it says (don't quote me) that the biggest reason that men cheat is because they don't feel RESPECTED by their spouse. They know that you love them but men need RESPECT. In the bible it tells our husbands to love us BUT it tells us wives to RESPECT our husbands. You need to sit down and make a list about all the things that you repect about your husband. Then share them with him. If you give him what he needs, he will give you what you need. It doesn't always seem fair about who has to take the first step but YOU need to initiate this and save your marriage. For your sake, your husbands' sake, and your children.
On the radio a couple months ago I heard a speaker saying he split the room into 2. Men on one side and women on the other. He gave them a choice. Be loved but disrepected your entire life OR have respect from everyone but have nobody love you. EVERY SINGLE MALE chose to be respected!!! EVERY FEMALE chose to be loved!
As hard as this is, it will get better. Continue going to Christian counseling and do not throw this in his face. That will only put a bigger rift between you two. I wish you all the best.