At school a girl was asking you out and your Best friend.. Do-Yun immediately got infront of you and protected you

”hey back off.. he’s mine..” sure he talked.. with a little possessiveness in his voice but it never occurred to you

The girl walked away and it turned out that was actually your crush..

”Anyways.. where do you wanna go..? Maybe the library..??” Do-Yun turned around and hugged you while looking at you