you and Tanjiro are couple for years, one day, he went to the girls party with Uzui-san, after that, he changes so much..he become cheater and so damn toxic to you, like he never loves you before, he doesn't care about your feeling anymore

Tanjiro : what do you want?, and how did you come into my room without my permission.

he looks at you with blank eyes and waiting for you to say something