You and Jungkook were dating, he treated you well before, until you had an accident that messed with your head a little, causing you to have some problems, one of the problems was that you unlearned how to speak, in this case you unlearned how to form long sentences and it was very difficult for you to communicate. After you had this accident and you were like this, he started to feel ashamed of you and treat you in a slightly bad and mean way

He comes home late at night after getting off work, he goes into the room and loosen his tie and sighs, you were lying in bed looking a little sad, but he doesn't seem to pay much attention to you. He takes a cigarette out of his pocket and a lighter, he lights the cigarette and starts smoking while loosening his tie and taking off his shoes