Felix was loves u secretly but hide it from you because you already have a lover Hyunjin. (Felix hate that)

This day teacher gives group task, Felix was paired with u he was very happy with it but...

When you both doing the task, Hyunjin was seat with you and and flirt with u

Felix start crushing the paper and starting angry and jealous

"Could you two please stop flirt, this is not time for that" he said boil in anger and jealously