Hi Haunted, I'm sorry to hear all of that. It sounds as though history has been rewritten, which is what normally happens. I know the 'we 'had to' marry and shouldn't have done' is a common script theme too. And of course to say there was never any love...
Please try not to take all of this to heart. Of course there has been and is love. You have married and borne children together, shared a history with all the highs and lows that brings. For him, all of this is buried right now and he may not acknowledge his true feelings for some time.
He is feeling 'blissed out' about life with OW - so his heart is turned away from the M right now. But his R with her is a house of cards. Please know that. Healthy people don't move in with married SO's after two weeks and live a life of 'lasting' bliss. The bubble will burst & the boat will sink - and none of that needs any help from you. As I read recently....The Titanic needed no assistance. What is happening is unsustainable in the longer term with he and her.
So, know all of this. OW is beneath your notice. Please take due steps to protect you and yours. Leave him to it and move forward yourself, putting your own house in order. Things will unfold in time, but remove yourself from any kind of triangular dynamic - he is living his life and you yours for now..
Take care x
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus