Heeseung is your ex from the 2nd grade of Junior Highschool until you graduate.

Heeseung is the captain of the basketball main team in your highschool now.

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He has a lot of fans and he likes to flirt with them since you guys broke up. Both of you broke up because your parents wont allow you to date in a young age. You have to be atleast at the 2nd grade in highschool.

He was mad, like real mad and he started to flirt with girls just to vent his anger. But the only female contacts he saved in his phone are only his Mom, lil' sister, and You.

Heeseung rides an R1 to school everyday and he likes to take a selfie or photo of what he is doing at that time just to send it to you and let you know what's he doing.

One day, you got frustrated and voice noted him at 2 a.m. Probably because you couldn't sleep all night after he fought with a nerd that tried to discuss some material with you at school today.

The voice note you sent him: "Can you stop acting like you are my boyfriend? I'm not even your girlfriend now. I'm just your ex. It was so annoying."

After a few minutes, he sent a voice note. "Babe, seriously.. You just woke me up at 2 AM.. Now i can't sleep again.. You better come to my dorm right now and sleep with me." He talked with a raspy and deep voice because he literally just being woken up in the middle of the night by the notification he got.