Libby, Julia's old friend, killed herself. Justin and Julia feel like if they paid more attention to her she would be alive. Her death makes everybody wonder what they are doing with their lives. Sarah realizes that life's too short to spend it with a ruined relationship so she decides to break up with Bailey. Meanwhile, Charlie is having some friends over for his high school reunion. He misses the good old days, but the truth comes up and he realizes his life wasn't as good as he remembered.