ch. 17 & 24

I think the white haired dude was influenced heavily by the husband to be honest because in ch. 17, I'm assuming the person watching them (?) when they spoke as husband and wife made the white haired dude want to do the same with the mc because you can see his figure from behind the door

but the other theories about the husband being the one in the body or both being in that body makes sense tbh, I wish there was a novel for this manhwa because I'm so curious about their past lives T-T!!