Okay.
You did not say you and your HUSBAND have filed divorce papers, you did not say you've had your first hearing in front of the judge, you did not say you've gone back to court for the final court date.
In Oklahoma a person files for divorce. They have an initial hearing then go back a month or so later. IF there is nothing to debate or argue over the judge would make the decree final. If the couple are arguing over custody, separation of property, anything at all then they can be back in court for years before the divorce is final.
So, since you are still a married woman in the eyes of your husband and the eye of the law....you are a married woman seeing another man on a date. Call it anything you want but it was a date. Alone having dinner and a movie. .
So yes, you are cheating. Period. You invited a man into your home to spend time with you. It doesn't matter if it was for a booty call or to complete a project for work. He was in your home. That's a date.
You are a married woman that had a date with a man other than your husband.
Get a divorce, when it's final you are no longer married. Until the divorce is final you are not able to date, go with a single friend or be alone in your home with them unless you want that used/filed against you in court. That will help your husband get custody of his children.
As for paying you money or child support or a single penny, he's not obligated until the judge signs a decree saying he is legally obligated to do so.
There is nothing that says he even has to bring the kids to you. He can keep them and go file for temporary custody. AND based on your behavior he'd likely get it. Then you'd be paying child support and possibly spousal support to him until the divorce is final.
Once the judge has made up their mind to give one parent custody they hardly ever give it to the other parent even when things are worked out.
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So, go file for divorce. File for custody of your kids. Ask for spousal support and child support. BUT if you do joint custody you won't get any support.
He has every right to expect his wife to be faithful. Your husband is still your husband. Regardless of how you feel about him.
So either get a divorce or move home. Separation is usually a time when a couple decides to use time away from each other to work on issues that can't be resolved while they are in close proximity. They can also use this time to sort through all the stuff in preparation for divorce but legally they are still married.
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I'm sorry your marriage is over. I always hate to see a family split up. It tears the kids up inside. It's possible this event with your husband has made the kids much more sympathetic with dad too.
They went to visit dad. He missed mom so he called her. Things progressed because mom decided she was busy with her "friend" and didn't take dad's call.
So dad told the kids he was going over to check on mom. Thank God he didn't bring them with him to see mom on a date.
When he got back to them he was probably white with anger, hurt, and near tears. They saw how you hurt their dad. Now they see you in a different light.
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You have to think of yourself in a different light now. You are a married woman living apart from her husband. You have to be above board, no fault at all, no dating, no doing anything with any man by yourself. You can go in groups of friends to stuff but you probably shouldn't entertain anyone but a female friend at home for months and months. It's best for your kids.
Once you are divorced you will be free to date. I'd still wait a long while before bringing anyone into my home regardless of kids there or not.
I'd like to just say one more thing. I know you have moved on. Your husband is obviously having a much harder time with this. He's hurt to his core.
He's striking out at YOU the best way he knows how, the worst possible way. He's using the oldest child as a weapon because he knows him disowning her will hurt YOU almost as much as you hurt him that night.
He's in pain. He's striking out and isn't seeing clearly right now. Do not tell your daughter anything to justify yourself or to justify him. He's hurt. That's all you need to tell her.
If she's really not going to see him at visitation time you need to sit down with hubby. He needs to understand the deep unforgiving pain he is causing her.
He may be incapable of it right now though. Just ask him to pause, to try and put himself in her shoes...he needs to try and see life from her perspective.