They used to be best friends, all four of them. Now things are different, since that letter got out. "I swear I will find out what you did. I know you cheated on her. I'm coming for you." That's all she wrote in the letter before slipping it into her bag and leaving the room. She'd never intended for him to see it. It was just for her. To let out frustration. But things don't always go as planned.