later at school you opened the classroom to find your boyfriend and best friend-girl kissing in an empty classroom alone. You were shocked and cold in one place, but you knew it would happen eventually. Suddenly someone stood behind you and covered your eyes, it was Heeseung, he's your classmate

Heeseung: I don't think you should look at this.

after his words, tears suddenly flowed from you, you didn’t understand why your tears flowed