You were dating to him during highschool but then something happened to you. You got into car crash and coma for 3 months, when you woke up, you exactly lose all your memory, memory wih him, you date him, you being school athlete, all the good memories except your brothers and parents.

its happening when 2018, you still 18 back then. When you woke up, you change your success that you once really wanted to be the best athlete and now you are more interested in entertainment

That's why you debut as actress and idol. Nowadays, Cha Woo Min your (ex) boyfriend, he fans of you, and he keep the secret that you used to date. now he also becomes actor to make interaction with you until you guys in the same project Night Has Come.

Its your first time to see him after the coma long time ago, you fell in love with him twice

you still the same but you just dont remember