Your wife had an emotional affair and a physical affair. She allowed another man to touch her in a way that only her husband should.
When I confronted my wife after finding out she was sexting with a co-worker her response was anger, vitriol, gaslighting, minimizing. She repeatedly said she had not crossed any lines. She was treating the whole thing as no big deal and trying to convince me that I was overreacting. The closest I got to an apology was her saying I'm sorry this hurts you and she said it with her arms folded and pure malice in her voice
The next morning when she came downstairs to leave for work she was still angry, angry at me which confused me even more so.
When she came home from work I said I need time to think and I can't do that bumping into you around the house and I will not spend all weekend staring at the ground. There's a suitcase upstairs, I cannot make you leave but I need you to leave. That's when she started to realize how bad this was
We met two days later and I was fully prepared to say we're getting divorced if she continued with the anger and denial and gaslighting but she came to the meeting with her head hung low, crying and apologizing.
I demanded she find a marriage counselor. A few years earlier I had asked her when she thought about us going to a marriage counselor to help us learn how to communicate better and she shot that idea down adamantly so I found an individual counselor. When I told my wife I had a therapy session she got upset, asked me why didn't you talk to me about this, and I said I did and you wanted no part of it so I'm going by myself
In hindsight she realizes that if she had gone that maybe our marriage would have been strong enough that she would not have allowed another man inside
The biggest mistake I made was demanding MC from the beginning. You and her need IC. You would benefit from talking to somebody who is experienced with trauma because this is major trauma. Your wife needs IC to figure out why she let another man into your relationship. I pushed my wife into IC and now she is dealing with stuff that she repressed since her very rough childhood
It took me several months before I felt like my feet were back on the ground and I could think clearly. Like others have said, the MC will push to get the two of you past this problem. Ours did. After the third session I asked are we going to start talking about the reason why we are here. The MC was trying to use the standard gottman manual page by page and that was not working for me.
Early on my wife tried the darvo, deny attack reverse victim offender. One night she said placing blame does not help, both of us are at fault. My head snap sideways and I said this is 100% your fault, I am not to blame. She said you don't think all those years that you didn't talk to me or you froze me out plays a part in this. I said I don't do that anymore. My IC showed me what I was doing wrong and taught me better ways to try to communicate with you and I did try but every time I would try to sit down with you to discuss a problem you would fold your arms and you would throw up a wall and then you would get angry at me
It took her a long time to be able to say this is all my fault and your wife is nowhere near ready to accept responsibility and that's why she needs IC.
Someone suggested you separate your finances, do not do that. If you end up divorcing her attorney will try to say you abandoned your wife and kids. Print out copies of all of your financials and put them somewhere safe. Check them every single month
Like you I only saw a moment of the affair. The last thing my wife did before leaving work everyday was to delete the messages on her phone which subsequently deleted them on her tablet. I got lucky. I looked at her tablet midday. When I confronted her I asked what else they have been saying to each other and her response was I don't remember because it wasn't that important to me, you are giving us much more weight than it has. She realized the weight of it when I said there's a suitcase upstairs I need you to leave the house
You control the reconciliation timeline. She has zero input as to how long it will take. If she feels it's taking too long then she is welcome to leave and you have to be ready to accept that. You will get past this, you will grow from this, you will become stronger but it will take a long time and that's normal
There are many people on this forum who understand exactly what you feel. Heed their advice