Mystery schoolmate

Tae: The fact that you're in this class and I don't know who you are is frustrating me
-8:15pm

Tae: I heard your phone beeping. I just don't know from where
-8:20pm

Tae: Pft. He's such a stupid stupid jerk!! I hate him!!
-11:19pm

Mystery schoolmate: hey... close call. haha. I forgot to keep my phone on silent
-12:13pm

Mystery schoolmate: who's a jerk?
-12:14pm

Tae: That conceited jerk. Jeon Jungkook
-12:16pm