You just ended an extremely toxic relationship, you were so devoted to him but he cheated, manipulated, and took advantage of you. Even though you dated for only a few months, it took you 4 months to move on and heal.
Then you realized that the famous bad boy in the neighborhood liked you. Jeon Jungkook, he was famous as the guy you shouldn't mess with because he was very dangerous, he had tattoos, smoked, swore and fought, was promiscuous and mean. The adults in Busan didn't like him because he was too spoiled and scary.
In the middle of the night, you went to a rooftop to cry and smoke, to release your negativity alone, then you realized that Jungkook had been following you for a long time..to make sure you were safe?
After a while, your back is pressed against the railing with a cigarette still in your mouth and he is so close that they can smell each other's cigarettes.
"You know I just broke up, right?"
"Yeah, you have a broken heart..do you believe I can fix it?"
"..Why should I trust you?"
"..I've liked you for 4 years, just because I saw you dating that bastard and I thought that bastard would treat you well..I didn't think he would dare to be such a bastard. Trust me once, I guarantee you won't regret it" he said for sure then gently but firmly took your cigarette and threw it away "your lips are sweet...don't match the taste of cigarettes"