Cant tell bc the website I've read it on didn't upload the first 27 chapters, but the FL is pregnant then left the ML through faking her death with a fake body. The ML did some weird ass shit like taking the body to his room and tried healing it even though the body's clearly dead, he also preserved it with his holy magic or sum and went insane; he's talking (sweetly) to the body like she's alive. Anyways she's currently far away from the male lead living happily with her twins
He's definitely suffering mentally, like the mf needs some psychiatrist after the fl left. Idk if that's enough I kinda wanted him to be physically suffering aswell but he started a war with multiple kingdoms just to find ancient relics or artifacts that has a potential to "revive" her
I think he also broke off the fake engagement with the red girl? I forgot the novel's a bit hazy in my memory now
Try reading it? https://moonlightnovel.com/novels/my-lovers-personality-is-a-little-bit-strange/
Havent finished the novel yet but I've reach quite far, all I can say is that the ml's a goofball and I'm still hoping he's not the ml