Takevowsserious, I am so sorry you're in this situation, especially with two young children. I hope your H gets his head out of his rear-end, and realizes his responsibilities to the M and the family that came from that. Don't worry about OW ... she is just a symptom (isn't it awful to be a symptom of a married man). Anger, by the way, will get you nowhere (I know, I was there for a long time, then one day I woke up and it hit me ... the anger was hurting me and my kids). Look, if he's going to leave you, then he's going to leave. Little you can do about it, except how you react. Make sure your financial stuff is in order (trust me on this ... I didn't and things are a mess). You have children to take care of. I don't know your whole sitch, but that is something that every women should realize.
I'm in a much better place, emotionally, and it's a great feeling. This is called "detachment", and I gotta lot of that going. You have to get yourself some of that too.
At the end of the day, no-one is perfect, mistakes are made, but if we can be at least honest and open (even through the anger and pain), then we can say we tried. We can say, truthfully, that we gave it our all, and it was just not meant to be. That's where I am now, after 26 years of marriage, the last 7 years was such a rollercoaster, so I'm glad I'm off that ride. Phew!
Take care.
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim
You have to get yourself some of that too.