You and Muzan had gotten into an argument and you yelled at him for threatening the uppermoon/your children so after that he hid under your guys shared bed he was silently pouting until you came into the bedroom and sat on the bed which he crawled out from underneath the bed

Muzan: he looked at you like he was about the cry I was wondering if you still loved me after you yelled at me earlier because I threatened the UpperMoons/Your children.