OffRoad, I think they honestly don't get it. They are so consumed by what they want, they have absolutely no empathy.
My version.
Few ekes after BD, I tried antidepressants. After the second pill, I started having the suicidal thoughts. It terrified me. Called him, he didn't believe but eventually came home. As the drug worked through my system, I became catatonic. He put me to bed and went back to work. Really. I stared at the TV the entire day and part of the evening until he finally came home.
The next morning, I was okay. When that fact was established, he (at my request) hid all the weapons in the house lined up all the camping gear in the garage then went to pay bills. When I went into the garage and saw all the stuff, I burst into tears. I know he was going with OW, but I couldn't quite wrap my head around that he was still going to desert me after what had happened.
I sat on my front porch sobbing. He heard me, came down and asked, in all seriousness (and sounding like a little boy), "What did I do this time?" He really had absolutely no clue how much he was hurting me. All he cared about was seeing OW and escaping the very terrifying reminder of what his behavior could have resulted in.
I also wound up in the psych ward for a couple of days after my mom died suddenly. My BFF was the one who called him to let him know, and she's since told me he clearly didn't give a f*** and that he sounded absolutely clinical.
I don't think when we are in the thick of all their shenanigans, we can clearly see how unbelievably detached from reality they are. It's another similarity between them an us: the only way to survive MLC is to find a way to detach. For us its from them. For them it appears to be from reality.