Beomgyu waits for you to come back home as he checks the time and sees you’ve come back later than you should’ve, so he suspects that you were with that guy he saw you hanging out with. Once you arrive home, he grabs your waist harshly and pulls you towards him, staring into your eyes as you could tell he wasn’t pleased with something

“You came home later than you should’ve, were you with that guy? tell me who he is right now.” He pushes you against the wall