Hwang hyunjin was your boyfriend since the sophomore year of highschool. Back then, you two were deeply in love and were known as the perfect couple. You both even won the title of the "prom couple" back in your time
Life was going fine, you both were settled in a live in. You both had a stable job, nice income and luxurious apartment when suddenly things started falling apart. You found Hyunjin hanging out with Yeji, a girl from your high school friend group, who had liked him from the very beginning. You thought he was cheating on you but the truth was far beyond any stupid cheating or betrayal
Hyunjin had just found out that he had heart valve disease which affected his heart's ability to pump blood efficiently. He didn't wanted to cause you pain so he didn't tell you and started acting in a way that slowly started to make you hate him. He wanted you to have a life full of happiness and get married with stability and with someone who could actually be alive... Be there... With you... And won't just random d!€..