Hi P,
I’m so sorry for what you are going through. Your pain comes through in your post. You are justified in your anger and hurt don’t forget that. I don’t know how long it will take you to be able to move on but the reality is you will never forget and will be triggered the rest of your life in your relationship with her. That’s the reality.
I do believe it is possible to come back from this as maybe she did learn a lesson. She seems from all your post to be at least trying.
The truth is you caught this affair early. She was in the process of transferring her love from you to him. That does not mean she does not love you but she fell into the trap of the new and exciting rush of feelings.
Thats why you are having a hard time because it was going to get worse but you snapped her back to reality quickly. (We would have to discuss the infamous "fog" as it gets misused but I think it’s real). Because you caught it early she realized hunky guy who cheats with a married woman probably was not going to be a good long term partner. Also she had a lot to lose you, kids, family.
You have mentioned this guys looks multiple times because you know the reality that he was good looking. Well you know what you need to do. Start working out. We all know why it is standard advise, looking better and being healthy can do nothing but good. Not for your wife but for yourself. Maybe for a future relationship? who knows but It will make you feel better.
As for your wife you need to try and stop calling her names. She definitely deserves it but no one can take constant abuse, No matter what evil they did. Talk about it but try and stop the name calling.
As for the fight you mentioned where you grabbed her wrist. Getting physical with her is a big no no. Leave the room and cool off if it goes there again. She got angry back as that was probably scary for her and can be interpreted as a step toward physical violence. It’s hard to judge each fight individually but it sounds like this one got extremely heated so she lashed out in anger too so I don’t know if what she said is permanent or was just said in the heat of the moment.
Maybe cheating was a deal breaker for you? Maybe you cannot get past it? I have no idea and it seems like you don’t know either. You need to work through that with your counselor. With that said…
I believe you are at the point you need marriage counseling. You need help guiding your conversations with each other. You both have decided to try and make this work so get some help.
Your wife is right about some things. All day everyday can’t be about the affair if your trying to rebuild. You need to try and have some good times together. Go out on dates and just have fun together. Even if you both have to fake it till you make it at first.
I believe the advise about having set times to discuss the affair so the rest of the time can be normal. you are not leaving immediately so you can shop around for a good counselor.
There is a reason people recommend Gottman institute counselors besides being the #1 largest collection of experience and science about relationships they have a good philosophy. 1 - should you be married? Because maybe you should not be? 2 - discussing the affair comes first as until you examine it throughly you can’t move on. 3- the relationship.
Google a Gottman counselor. You’ll very likely find one in your area. Also if you want some reading try his book "how to make love last" it walks through their philosophy. It even has practice examples of their quizzes they give to couples to test if they should be married. See if it sounds right for you. If not shop around. Start a separate thread here asking about counseling as a lot of people here have a great deal of experience with it and can help you know what to look for.
One thing I also believe that we men are bad at. The thing about us watching videos, listening to pod cast and reading books and articles and becoming super experts and then flooding the women with them because we want them to think like us. The 2 mandatory readings she needs to do are how to help your spouse heal from an affair by Linda McDonald and not just friends (the Gottman institute will make her read it) so there’s no getting out of it.
I don’t really have a great answer for you. Try to not get abusive and get some outside help. Use this place to vent as there are some real sharp people here. Work on yourself… It can’t hurt.
I am pulling for you and wish you the best of luck.