The ml is the husband ,they’re the same person he commits suicide in 1st life then his soul get bind to system,in his 2nd life (it had dungeons ) he dies many times and system had to revive him ,so system thought that his old memories with Mc is keeping him chained and punish him by removing all his 1st life memories. And after he finally defeats the final boss ,he again enter his 1st life Alec body. But he doesn't remember that he's Alec and this misunderstanding continues till most of all novel He remembered his life in later part of novel after drinking the memory potion.
Spoiler
The ml is the husband ,they’re the same person
he commits suicide in 1st life then his soul get bind to system,in his 2nd life (it had dungeons ) he dies many times and system had to revive him ,so system thought that his old memories with Mc is keeping him chained and punish him by removing all his 1st life memories.
And after he finally defeats the final boss ,he again enter his 1st life Alec body. But he doesn't remember that he's Alec and this misunderstanding continues till most of all novel
He remembered his life in later part of novel after drinking the memory potion.