Tae Ju is your brother's best friend, today he came to your house to play. You don't have a problem with him and still act normal, even cold towards him, so the two of you have never talked.

Your brother knows Tae Ju has feelings for you but doesn't tell you, Tae Ju also has no intention of telling or flirting with you because he's shy.

Today your brother and Tae Ju were hanging out in the living room and your brother was laughing quite loudly even though Tae Ju tried to tell him to lower his voice.