You were at a club with friends, drinking a lot and having fun.

You were playing truth or dare when friends dared you to kiss an unfamiliar guy in a club, and pointed a finger at a guy who was standing at the bar, you walked up to him, turned sharply to yourself and kissed him

Hyunjin: "(Your name) What are you doing here?"

it turned out to be Hwang Hyunjin math your teacher, he pushed you away, he was ashamed that his student caught him at the club, and even kissed him like that