I cannot thank you all enough.
I logged in and read replies (some through tears), and they helped me think through answers to questions you posed, to think about what I've been doing and not doing, and what FWH has been doing an not doing. In sum, I think FWH finally, around the 1 year ago, moved past his shame, moved past trying to fill his time with "appropriate" activities, and started rebuilding himself as a person. He was raised in an emotionally neglectful home, which his counselors explained from day 1 of IC and MC. In his home, people weren't inherently worthy of love, and they weren't worthy of forgiveness. He didn't understand what unconditional love was (and didn't recognized it from me), because he didn't have it as a kid. He also couldn't accept/forgive himself, because he'd never gotten that as a kid either. (He hurt him the other day when I said I hate his family, but I really, truly hate them.)
At the beginning of 2023, he was trying to check the boxes for being a good person, but still carried this inner self-loathing; he was quick to defend himself on the smallest of things, because he was falling back into what he had to do as a kid to survive (but which was BAD for R); and he said the emptiness inside would never be filled, that he'd tried to fill it with X, and with Y and with the A, but that he couldn't rely on me to tend to his never-ending emptiness, and that it'd never be filled. Then he found religion. He'd been exposed to the church, but he'd never "felt" it before. He finally felt the unconditional love and unconditional forgiveness that religion gives to so many people. Although I'm no longer Christian, I had a similar awakening a long time ago, and I am beyond happy for him.
Happy for him? Yes. Ready to embrace a whole new person? Almost. I have loved all the changes, the growth, the new person who is emerging, but it's scary! He is the kind of person who sticks to things, so I don't think the changes are temporary. If anything, he's fumbling through the process, and slowing realizing what a dick he was before, and becoming more committed to this new reality. It's a reality in which he's genuinely patient, caring, and not quick to defend himself when no one was even attacking. He's becoming a better parent, because he's more emotionally present. It's not all roses. FWH does lapse sometimes - not the A, but his old attitude, his hard edge and defensiveness. It's flashes of insecurity here and there. I acknowledge it, I offer kindness, but I don't take crap anymore. I had to work on myself in that area, and I still am working on it.
My existential a question has been whether I'll embrace the new him, which I had trouble even articulating in my initial post (it took a while to write). As I read your replies, I realized I've been frozen. I've been going through the motions of being together, but I've been holding a part of myself back. Just realizing that has changed the way I am. When he comes home, my muscles don't tighten up. It's almost like my lizard brain (part of my brain that stores the trauma) finally realized he isn't a threat. That sounds dramatic. He never hit me, but he is the source of the worst pain and suffering I've ever experienced. My infant son died in my arms, and my FWH's betrayal caused more trauma than that loss. My son was going to die. He had a heart defect, and nothing could have saved him. My lizard brain learned to accept that. But the A was something entirely different. It destroyed my sense of reality, and it's still recovering.
I think this is my first real progress for my lizard brain. Since starting this thread and reading your replies, my body is different. I'm physically and emotionally at ease. I haven't felt this way in so long - 13 years or so. Before the A, there were other forms of emotional detachment in our marriage from FWH's emotional baggage. As one of you said, I'm finally getting the person I'd wished he'd been. It's just taking me some time to adjust, to not brace for myself for something betrayal, defensiveness, attitude, whatever.
My recovery has had major milestones. This conversation with you is a milestone. I can't thank you enough! The next step is to explain this to FWH. He can sense a difference. I think knowing the details will help him support and settle into having the new version of me.
Thank you again for sharing!!!