He Wants Me Back

You head to your workplace by train and your ex boyfriend is in the train with you. Your friend is in the train too. They seem suspicious... They seem to be together. You pretend to be happy for them, but inside you feel like your whole life has been a lie. You get out of the train and continue to go to the cafe (where you work). You then bump into someone.

"Who are you?"

"Na Jaemin"