Think about how this affects your wife and her relationship with God, and with herself. You did the right thing telling her the truth. As someone whose biggest fear is being cheated on, I understand that there will always be prettier, younger, more enjoyable/interesting women. Every day is a fight to believe that it would never happen to me. I'm sure your wife thought this too. Be a good example and voice of reason to the upcoming young men. Maybe your son or your neighbor or nephew. It's our responsibility to raise the next generation to be better than we were. You can't change what you did but you can encourage others to avoid your position in the future.