First of all, The movie is based on the same Novel; Left Ear written by Rao Xue Man who is also the screenwriter of this movie. It's a depressing movie with a very dark side of high school teenagers and their life towards adulthood. Everyone is suffering in different ways this is the real message behind this movie. Li Er The first FL had a crush on his classmate Xu Yi who is good student in studies and Zhang Yang had a rich girl friend Jiang Jiao. The rich girl only needs attention and love which her father doesn't give her, so she wants this all from Zhan yang. On the other hand, Ba La is poor a girl people usually found in pubs. She had a crush on Zhang Yang. The male leads are more responsible for all the depressing things happened in this movie. Zhang Yang learned the lesson through unknowing truth with the passage of time and experiences but Xu Yi character left cliff hanger which nobody found out what he is doing in his life at the end. This movie basically portrays that you can have a crush on the wrong person and obsession towards certain human being is definitely leads you with destruction. You have to know what is right and what is wrong. Before going to regret in the future look into your present. Positive self-love is important in life. Things that seem like maybe not the way they are in the real and there must be the reason behind those things. Over-all if you want to know about every single detail more in-depth and also have an interest in human emotions then rewatch value is high. Moreover, this is great but it's up to the person what they drive from the movie.