Am I the only spouse who literally feels like her H is just gone, almost like death? He is so cold and distant and it happened almost overnight. I had to grieve that loss of the person I knew because he is "gone" and will likely never come back again. Wow.
No it's very common to feel this way. I know I did. Some people describe it as being like the old movie Invasion of the Body Snatchers. It still looks like your spouse, but it's like aliens came along and planted another person inside their skin.
As for whether he will come back again, he very well might. They sometimes will come out of the fog and go right back to being their old self. My XW wasn't one of them, but even she has gone partway back. Maybe now about 50% the person I was married to and 50% a stranger as opposed to 95/5 after BD. And it's taken all these years for her to come back that far.