Because Yoongi is bad at expressing himself and Jimin likes sleeping on someone else's shoulder.  

She likes him, he likes her. They're the best childhood friends anyone could ask for. They know each other like the back of their hand...well almost. Park Jimin is a really nice boy although notoriously known by Ahn Ri Chan for his messy room, but for a good reason. It's one of the only things that truly annoys

  Life Lesson: { Love Is Love, Sil

             "Sometimes in life, you have to accept coincidences and fate. Because at those times, life is trying to tell you something is wrong—that something needs to change. One can’t always think that their life will be stress-free and perfect forever. No, the world doesn’t work like that.