Barely a Mix Tape by Katie Krentz

This short story was based on a college freshman's memories of spending her summer vacation with her friend Luke. They both have known each other since childhood and feel very comfortable around each other. When Luke decides to give her a mixed tape she wonders what it means. As the years pass she realizes that the songs on the tape don't remind her of Luke and she is pretty sure that the songs don't remind Luke of her. Instead the songs reminded them of their respective friends they missed during the summer away from college.