God men can be such bastards. It’s all well & good for him to piss off out the family home and start this new relationship in 5 minutes leaving you feeling like the bad one.
Maybe you weren’t ‘sexy’ enough, maybe you moaned to much, maybe you prioritised the kids over him, maybe it got dull. Well blah fucking blah, that’s life. You choose who you marry for better or worse & when you have children it comes with the territory that it’s not all sex & champagne.
Really grinds my gears! OP, you’re hurting. That’s understandable, you’re a normal human being with a heart & your husband has fucked you over massively.
Do not make him seeing his kids your problem, he fucked off so let him face the consequences of being a part time dad & sort his own shit out, you owe him nothing, absolutely nothing.
Concentrate on your kids & when the time is right someone will come along for you, you are so worthy of a decent man. Do not let this prick make you feel like you aren’t enough. He wasn’t enough.
Let him enjoy his honeymoon period, until she starts nagging him about not doing the same shit you nagged at him about. It will happen. By that time you would of found someone else & be SO glad this happened. 💐