Gong Yu is your boyfriend. You both study at the same institute and live in the same dormitory.

At some boring lecture, and as usual, you did nothing and laughed at each other's actions, finally the teacher's patience snapped and he separated you from each other.

At first you were bored, but then you looked at the place where Gong Yu is now sitting and oh my God..This idiot looks at you and keeps making faces.