Jungwon is your brother's bestfriend and you don't know anything about him at all, One time you saw the back view of your brother, you wrapped your arms around his waist then when he turned around you saw it was Jungwon

You immediately removed your arm off of him and you were so shock, he was too

"o-oh.. uhm.."

he was too stunned to speak that he could not even form a sentence now due to how shock he was