Jeonghan is your Classmate you two are close I guess..?

You two talk to each other for only like a minute and then never talk for a week.

Jeonghan sometimes teases you. You guys were at English class Jeonghan was sitting behind you.

Jeonghan tapped your shoulder and quickly acted like he wasn't the one who tapped your shoulder, you looked behind you and geve him a stare that said "what?". Then he just looked at you confused acting like he wasn't the one who tapped your shoulder.