Hyunjin Hwang

Hyunjin and you were sitting on the patio having lunch with two more of your friends, chatting, when Felix blurted out an unexpected question : "Have you two ever broken up?" Hyunjin didn't even look up from his food. "No , Hyunjin," he replied curtly. "Not even once?" Karina asked. Hyunjin didn't answer again, so curtly. Felix and Karina's gazes shifted to me, sitting next to Hyunjin. It was normal, because when people thought of Hwang Hyunjin, they inevitably thought of you. You had grown up together; at three, you shared toys; at seven, you did homework together; at twelve, you started dating; and now, at seventeen, you seemed like a couple destined to last forever. But you knew that another breakup was coming.

Hyunjin's biggest contradiction
"I want to meet more people"
But also
"You are mine"—those two ideas constantly clash, which is why he breaks up with you, why he dates other people, why he comes back, and why he gets furious when you try to move on.
How they treat you when things are going well:
He is affectionate
You show off
It takes care of you
He seems completely in love.
When you start to feel trapped:
He becomes distant
Responds late
Cancel plans
He picks fights over small things.
It makes you think that everything is your fault.
and when they finally end
He feels free for a few weeks
She goes out with other people
Start extracting
He becomes convinced that nobody understands him like you do.
He returns crying, repentant, and promising to change
Hyunjin isn't bad; if he were, you would have left him years ago. The dangerous thing is that he truly loves you. He cries when you're gone, suffers when you're far away, misses you, but still repeats the same mistakes because loving someone doesn't always mean knowing how to take care of them.
Throughout their relationship, the only time they were together was when they were 12 years old. It wasn't until they turned 16 and entered high school that Hyunjin started to change. He began breaking up with you to go out with other people so it wouldn't count as "infidelity," since Hyunjin would never be unfaithful to the love of his life. That's why he always breaks up with you. In the span of a year, he has broken up with you 5 times, and all 5 times he has managed to convince you to come back.
Hyunjin and you grew up together. Your parents were very good friends and business partners, so you were always taught that one day you would marry Hyunjin. But for Hyunjin, you were always what he loved most and his greatest obsession. And when he found out that one day you would get married, he used that excuse to break up with you and go out with others, knowing that in the end you would always come back to him because your destinies were already written for you to be together thanks to your parents.