I'm sorry you are labeled a cheater but hey guess what...that is what you are. Doesn't matter what she did, doesn't matter what she didn't do, you made the decision to cheat...period. You had the simple answer to avoid the label....get a divorce then get into another relationship. Sometimes our lives ARE defined in a single moment.
I'm not saying you are a bad person, that you are not trying to be a great step-parent, that you don't really love your current wife; I am saying your current relationship started on a level that most people in society find distasteful. Our society so disgusts cheaters that they will move blame from a drug addict, a convict, emotionally disturbed to the one that did the cheating. I have never once heard anywhere someone say "It's ok that you cheated he/she deserved it and you were right to do it". Now Im not 50 but getting close so maybe in the next decade I will have that opportunity to hear it but I have my doubts.
The converse is also true I have heard from everyone that has ever cheated "Hey it just happened it wasn't our fault and it's not who I am". Whats that quote? "I think thou protests to much". Just some thoughts from a guy that was cheated on so I am somewhat biased in my opinions.
-------------------- Forget waiting for the storm to pass
Learn to dance in the rain