Sunoo is your boy best friend and the two of you are in the year 12 but different classes. You both have been together in a class till the 6th year.

Earlier that day you greet one of your classmates and talked about a group project.

At lunch time at the cafeteria Sunoo came over to you as always

You both talked like usually but suddenly he asks

Sunoo:“Who is that guy who said “Hello“ earlier? And why are you smiling at him like that?“

Why does he kinda sounded jealous and mad while asking this?