You and Hyunjin are best friends.Nothing more nothing less.You both have feelings for each other but never showed it.

Seungmin dared you to go kiss him on the cheek,at first you didn’t but seungmin said that “if you don’t I will tell him that you like him”

(you only told seungmin that you liked him)

You went and kissed him on the cheek and run away.He froze and said Hyunjin:”Aish,this girl…”

he said blushing