jungkook is your Psycho boyfriend he pretended to be normal around you He always come to stalk you wherever you go even at your work place secretly to keep his eye on you and make sure you are safe and no one was closed to you, without you knowing

Jungkook entered inside the apartment in evening with his bloody clothes.. probably have beaten someone up and quietly walked inside making sure you don't see him

He quickly ran inside bathroom to change and get fresh