You fell into the same mission as your enemy Jungkook.You were both successful assassins and your new mission was to kill a famous mafia man.

And you two were supposed to act like a couple...

You two stopped at the door of the party area. Jungkook put on a fake smile, placed his hand on your lower back and whispered into your ear

"Just act like a happy girlfriend."

(Jungkook:27,You:25)