Now we got additional information to work with. Do not worry about your actions in the past, the movie, or sex. You are trying. Be kind to yourself.
Your wife has significant investment in this EA. She is addicted to the game and the OM. That is why you are getting the resistance from her. To paraphrase you are cutting her off from her fix. Her response demonstrates where she is at. She is in "make believe" and nothing she does or says will make sense. Treat it as wayward speach and behavior. Until she is under the care of an IC or other therapy/methodology to stop the EA and prevent recurrence, her wayward activities will continue.
You have decided you don’t want to share your wife. But, you can’t force her to be with you. She walks across boundaries because she is in need of the fix from the EA. So, create conditions that make HER choose, and do so while making YOU an attractive option. This requires her to get back to reality.
The following is a suggested path of action. As with anything on SI, "take what you need and leave the rest."
1. Get out of infidelity
Tell your wife that you love her. Tell her you love her so much that you don’t want to impede her ability to be happy. You love her so much you can’t even contemplate sharing her. That if she must play the game, continue the emotional affair, and she loves someone else more than you -- then you accept that. You accept that you two are no longer a couple. Three is a crowd. Tell her you want the best for her because of your love. (Keep you composure when you say this.)
Let her have it. - game and OM. Let her have her “happiness”. Something tells me once she has what she wants, eventually she will figure out this is not what she needs or desires.
She is totally free to be in the game with OM. You are happy that she is happy. Only – she can’t do so as your wife.
You are OK with that decision. You realize that a relationship can’t be healthy if one is more into it than the other. It’s not what you want, but it’s what it is. You can’t make her unlove OM, and you can’t accept sharing.
Now YOU start whatever is needed to get out of infidelity.
This includes detaching. It includes stop doing things as a couple. It includes not making expectations to her on things that couples expect of each other: No sex, you don’t make her dinner, she doesn’t do your laundry… You simply start detaching. The 180 is your tool to make this happen. Do not speak to her about the marriage or any other aspect of your life. Do not engage in any of the tactics wayward spouses utilize to justify their behavior.
You may also include all actions needed to start the formal dissolution of your marriage. This choice is yours. The path of reconciliation and divorce run parallel for some time. You do not have to make a decision at this time.
She wants to talk to you about how she feels about the game or for OM:
“That’s great. It’s not relevant, though is it? Your choice to be with him in an emotional affair sort-of fired me from being your husband and I am doing all I can to detach.”
She wants to talk about the game and what she will do tomorrow in make believe:
“I hope you have an great time. I really want you to be happy. I’m working on my future so I won’t be doing that with you.”
Get it? You give her what she wants. When she sees what the emotional affair is going to cost… her tune may change. Except, you now control the narrative and you do what you wish. Now it is on your terms. By default, then YOU too are free to do what you want.
#2 Make it real
Your wife knows what she’s doing isn’t acceptable, yet she does it while it’s all romantic and riding unicorns in the sand along the beach at sunset in make believe. She is getting to have her EA and real life husband at the same time - cake eating. There is no reason for her to make any changes. Make it Real. Make her deal with reality by responding to her actions for what they are -- deluded and selfish cheating. Let her see her unicorn has a horn made of paper mache mounted on an old nag. He is a fantasy. Withdraw all support - financial included. Give these responsibilities to the other man in "make believe." Separate your finances and anything else you desire. Her source for companionship, money, and care will now come from the game and the other man. Tell her this when she has questions about finances, dates, needs new clothing, Etc. Tell her she needs to "go play the game" that is the basis of her life now.
#3 Document
Document her behavior, amount of time spent in the game, and examples of interaction and involvment with other man/men. At some point in the future she will be shocked to see what she has done IMHO. This will prevent her from minimizing her actions and denying an EA occurred also.
This information will be beneficial to ICs or anyone else that you may need to disclose the EA to.
I understand the need to keep the trauma to a minimum at this point. If it is too much, then do not do it. Take care of your own health.
Now because of the toll her EA has had on you and because reading or seeing what she has done may produce further trauma, you do not wish to access her activities. In the future you will need access to the game and her behavior if you reconcile. You will need to verify her behavior and that she is not in contact with other man/men.
#4 Figure out your needs
Assuming she is worthy of reconciliation and demonstrates capability for doing so, identify your specific items or deal breakers you require from her in order to reconcile i.e. no contact with other men, stop the game, access to all electronic devices and applications, IC to prevent future EA's , Etc
Note: OM may be playing her for a fool. At some point he may request money from her or have her fund a trip to meet up. Keep this in the back of your mind.
Post often, we are here to support you as you journey out of infidelity