I'm laughing bout you betting your own kidney lol. But really, you're right about this kind of ml. They starve their wives of love when it was only that word they asked from them. And when the thing they did to their wives will be done to them by the soul inside their wives bodies,they will show some differences. They will act as if they're not the same person who were the reasons of their og wives death. Just saying lol.
As someone who just read the novel. You are
(Spoiler alert)
Right. Man was so damn angry at her, and all she wanted was to be loved. But this jerk of a man was so desperate to cling on to the og fl, that og Villainess got jealous and started to harrass og fl.
So the root of all problems is the ml, your kidney is mine
HA!
No, no told up I was right I'm taking my kidney home!?
Oh I can already smell the ML being an ass.
Based on some serious stats (from my shoujo-stuffed lil brain), there's no way he isn't the problem here. Literally every other fictional anime husband who acts cold towards his og wife's soul has no good excuse or redemption ever. I'll bet my kidney he'll be one of them. Like, no way the og "villainess" would've felt the need to mess with og FL otherwise. Bro did not communicate with or acknowledge his love-starved wife, watch me be right.