We were preparing dinner, all was great, lots of laugh and banter. She asked me what's the reason so I told her my IC went great and I fell like we are in a good place right now and I want us to keep moving forward. So I asked my wife when's the best day next week for us to go visit our lawyer and sign the division of assets and child custody as we agreed on before in order to file for divorce next month. The moment I said that her face completely dropped and she started to literally beg me to no do this. We can do it, I don't want a divorce, please don't do this. Then she just started apologizing again and again and we got nowhere.
She's getting mixed messages. You're telling her you want to divorce, but still having sexual relations, still having friendly interactions, and still talking about reconciliation. And yeah, you've got one guy saying that it worked for him. But that doesn't mean it will work for you or for everyone else.
No one was more surprised than me to realize that I was open to R after my WH cheated on me. He'd gone on a Craigslist binge, multiple sex partners and various levels of emotional attachment. I came out of the gate on DDay swinging for the fence on divorce after 30 years of marriage. I was DONE. And I meant it. It wasn't a game or a tactic. We had reached THE END. It was all he could do to slow me down and to prove to me that he wanted to stay. And he fucked it up a bit at first with a broken contact. But after that, he pulled out every stop to prove he was serious, up to and including changing jobs and moving us out of state, quite a feat late in one's career.
Being open to R was really scary. For awhile, you can sit on the fence but eventually, you have to commit to one side or the other. Even then, it feels like you've got one foot out the door, like you can't believe the audacity of your own decision. But, I'm a woman of my word and when I say I'm going to try, then try I will. What that meant was an early recognition that Punishment and Reconciliation aren't compatible. You can do one or the other, but not both. If you try to do both, you're not just hurting your WS, you're hurting yourself. When you are committed to your marriage, hurting your partner hurts the marriage and splashes back on you. It was true when our spouses cheated, and it's true in our response to the infidelity. And that's the ugly truth about Reconciliation... that the cheater "gets away with it". We might insist that they make internal changes to their character and mindset and we might set tough boundaries, but when we take them back, we're doing it with the intent to return to healthy equality in partnership. So, early in R, the WS might start off in the one-down, but eventually, once they've proved themselves, they're allowed back in full, like the cheating never happened.
For some people, that's a deal-breaker. They can't imagine having a full-on, equal partnership with a person who has betrayed them in the past. And that's okay. No cheater is owed a second chance. But for people who choose R, we have to be able to eventually come to a point where we can write off that debt as uncollectable. There's no way a WS can repay us for the pain they've caused. The adultery happened and it can't be undone. It's unfair, but everything about infidelity is.
I'm not sure what you're trying to accomplish in relationship with your STBXW. You seem to think that you can divorce her and keep her at the same time, and I'm not sure that works for everyone, or that it's even healthy. From her POV, divorce is punishment, and one assumes that after a punishment, the slate is cleaned and the miscreant has repaid their debt to society. Maybe that's what you're going for, a method which allows you to clean the slate and start fresh? But punishments hurt. They're designed to hurt. You've put your partner in a permanent one-down with some nebulous notion that maybe, someday, if she holds her mouth just right, she might regain equal standing within the relationship. You've taken her home and you've taken her children, and even though she feels really bad about the emotional infidelity, she's going to remember that she didn't even fuck anyone, even if you don't remember it. Seems like quite a bit of fodder for future resentment, and resentment kills relationships. Like I said, you can't hurt your partner without hurting yourself.
No one can fault you for wanting a divorce. It's your right. But I think you're taking bad advice in terms of what your expectations should be afterward. I think your chance of success on your current course is very small, very small. If I was your WW, I might be slow on the uptake from the mixed signals, but once I really figured out that the relationship was unsalvageable, I'd be done trying.