The past is not all the way out in Korea.
Here is one of my topics that may help you.
I thinking they were close friends and when it started to had a chance to date. It was ruined. Hajin has only referred him as a former friend and nothing of the flashback had them dating. I don’t know why people says they are. Chapter 8 established Hangyum thought Hajin was not into guys. Chapter 9 established that was their first time having sex. If they did date it was not long but I don’t think did with all the details. Which Tapas has made a mistake in one and I don’t know how they will fix it in chapter 28. And in chapter 28 will think a word and I am afraid Tapas is going to put the wrong word.... -.-;
http://www.mangago.zone/home/mangatopic/5208964/
Oh missed a question. Yes that is Jaehee that give him the scarf and break up with him. Jaehee is the ex boyfriend
So, what exactly is Hajin's past with Hangyum?
Jaehee is the guy who gives him the scarf and breaks up in the flashbacks right? This whole time I thought I was tripping and they Hangyum had brown hair before lmao.
So exactly what was Hajin and Hangyum's relationship?! Did they date? Were they just flirting???
So confoodled. （/TДT)/