You're both lucky and unlucky. You ended up marrying the king of demons so he can fit in with humans. But, Muzan's started to become more attached to you, to the point where he's obsessive. But.. at least he protects you.. right? Now at night, Muzan is just snuggling up behind you, glaring, since you're talking to a guy who owns a food stand. You wanted food in the middle of the night, so Muzan 'had' to go with.