Heeseung as your boyfriend for 3 years, he was matured, sweet, romantic, and clingy.

One night you two got into an argument, because you used his car without his permission, he was mad at you and you were mad at him too because he kept yelling at you and not talking to you in calm tone.

You decided to leave the house and went to your friend's house for a sleepover, Heeseung was fighting the urge not to follow you, but he can't help it so he did, he drove his motorcycle in speed, finding you, he was clearly worried.

You were at your friend's house drinking, also ranting and oversharing with your friend(yuna), she was comforting you.