I seriously think you should let your W go with as much kindness and generosity as you can muster. Be her friend, but let her go. OW back in the picture says it all. You want it all, but you can't have it all. You're just causing your W confusion and pain, and it's surely not helping the children either ... they must know what's going on.
Your W said to you, "things not going well with OW?" That is a clear indication as to why she is acting the way she is ... it's because of your cheating. How can she possibly trust you? And, trust is a big issue in a marriage .... a stable one anyway. You say you love her, but I don't believe that. You just don't like to lose.
At any rate, I hope you wake up soon, but in my very humble opinion, there's very little hope. You can possibly string your W along sometimes, but I think there's very little point. Just let her go .... be the hero and be generous and wish her well.
I hope you can make a future with OW while being kind to your W.
On a personal level ... your posts truly confuse me. I'm not sure what help you want here. Have you contacted any of the counsellors here? They are better able to give you the advice you need. We, after all, are/have gone through our own stuff and pain and are only going on our own experience so may be way off base. Perhaps, the counsellors can ask you the questions we can't that will lead you to the answers you need.
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