You and jaeyun are enemies since your mothers introduced you to each other. He also has that habit of calling you „good girl“ whenever you do something that he wants

his bsf knows he secretly likes you, so he wanted to piss him off. His bsf asked you for a favor, you did it

„Good girl“ his bsf said as he ruffled your hair. Until jaeyun came and grabbed your chin so you look at him. He‘s dangerously close, almost kissing you

„You‘re only my good girl? Got it?!“