He still thinks we are going to sell everything and buy this country house and live there as we planned. It’s so confusing. Why does he want to do this with me now? It’s like he thinks it was just a blip and can be easily forgotten
OP, in the gentlest way, he doesn't actually want this life with you. He is "STUCK" in this life with you. The fucking idiot thinks a life with the OW would be all magical ad romance and lots of sex and god knows what else, but she didn't want him, and now he's sulking and mad that he's "stuck" with the life he's been "left with". Men like this are utter cowards - they often treat the partner they're left with like shit because they want the partner to leave them so that they can have the "poor me, my wife left me!" narrative and they are too cowardly to be the one to end it. He isn't truly sorry. You are waiting for him to behave remorsefully but this never going to happen. This is your new reality, and that old life is now gone, to ever. You will never, ever get it back.
My beloved husband of 20 years cheated on me, multiple times. It took me years before I stop waking sobbing from horrific nightmares about him and them. It took years before every tiny seemingly innocent thing would stop giving me horrendous flashbacks. And that was with his full openness and never becoming angry at my constant need to know every detail. It was utterly horrific and I think more so because like.you I was utterly emotionally dependant on him.
What was hard was coming to realise that old life was dead. Our old relationship was dead. It's like coming to have to live as someone else and try to learn to relove this man who is now a stranger. I could never, ever have tried if my husband had behaved like yours is. OP, I know you said you won't, but truly, I'm so glad for you that you have your own money. You'll be okay, you truly will. But that life you had with him is dead and gone and he doesn't want it back or to even try and help his wife heal from what he's done. He's so lacking in love or empathy like you he treats you like an inconvenience.