
? Are you referring to Jaehee? If so, by the end Hajin is more successful.
But I have a feeling you meant Hangyum and Hajin but that does not apply for this story. They didn’t date in High school. First time they dated was in chapter 35. They were only ex’s for about a week before they got back together.

The flash back are to where they meet and spent time together 5 years ago in the past.
Something happens to where they don’t date during that time.
Yes they did not date. One of the first hints as a new reader just reading this story: Hangyum says to Hajin is Chapter 8, “I thought you were not into guys” with a really sorrowful look.
As a Slight spoiler, Hangyum actually became an idol for Hajin.

I know that was to Mi Amore. But Hajin does becomes successful and it grows each day. Why should he be more successful? They are both successful in their own way. You don’t have to be famous to be successful. Hajin’s shopping mall is growing and having good numbers. Read the extra Hangyum thinks Hajin is going to be more popular than him. Comparing Hajin from the beginning to the end. He is more successful, happy, and enjoying his life.

I am glad I got you intrigued. I love the Korean Story better. I hope you will try to the fans translations when they are done.
I would want them to be equally successfully. Which I think they are in their own ways. I think Hajin is very successful and it is too early to say he is not more successful because his business just started. And Hangyum’s has 5 years on him.
ugh, I hate ex bfs where the ex is more successful in life manhwas because usually they dont do it well