Idk what ya'll about sure he asks a bit too much who he's with and where he is but HE FINALLY GOT TO DATE HIS CRUSH SINCE HIGH SCHOOL. THE SAME DUDE HE MADE OUT WITH WHO FORGOT ABOUT IT AFTERWARDS AND ACTED DISTANT (we know he thougjt it was a dream but Chae heon still doesn't know. It still is a hurtful memory to him). Let him reassure himself. 
