Mi Na wants to Ae Jung to continue guarding her secret, which was the reason for the National Treasure Girls disbandment.
Se Ri lets it slip to Pil Joo's mom that Ae Jung has a celebrity boyfriend. Pil Joo's mom does an interview so word gets out that Ae Jung has a boyfriend. No one knows it's Jin.
Representative Moon wants Ae Jung to sell out everyone to save Jin and, to a lesser extent, Ae Jung. Ae Jung refuses to do so. Jin tells Ae Jung to reveal their relationship to the public. He confesses that he requires surgery and could die.