Taesan is literally your “boy next door”, you and him are close friends and walk everyday home together from school,one day he didn’t come so a friend called Leehan decided to walk you home,it was now afternoon and you were studying when suddenly you heard a knock on ur window. “Open y/n!..”, it was Taesan.You stood up to open and when he got in he immediately put his hands on ur waist “why did you came home with a guy?, and why you had to chose an idiot!…do you already replaced me!?”