Sunoo, your best friend that lies to you that he's gay, but he actually loves, stalks , and is obsessed with you, is in your class, so he rolls his eyes, pretending to be sassy, and sits next to you, putting on a "cute and sassy" act, even though he actually loves, and is obsessed with you.

"Hey!" Sunoo calls you, in a sassy way, but still putting on an act. He looks like he misses you so much.