Since You've Been Gone is an okay book. It's definitely a cute book, and I liked seeing Emily get out of her comfort zone. I wasn't completely into the book, mostly because who Emily was seemed to be really dependent on Sloane being around, and if Sloane wasn't around, Emily wasn't much of anyone. It really did feel like her entire life and personality and identity revolved around Sloane. While I can relate to your identity revolving around someone or something, it really felt irritating in this book, especially since she seemed to have latched onto a few different people, only for the something really similar to happen again. I felt like Sloane was also a really shitty friend, especially with how she just left Emily with no explanation, and just a list of things to do. Even though her explanation at the end of the book made sense, it was really hard to care, no matter how hard I tried. The characters weren't memorable, and I felt like her friendship with Sloane was built up to be bigger and more important than I felt it was. I think teenage me would have liked it, but for adult me, it was too boring and felt pretty tame. I did like the random playlists throughout the book, and I wish I had thought to check out some of the songs before I had to return it to the library. I don't know that I'd buy it, because it would be silly buying it just for the playlists, but I'd definitely check it out from the library again just for that. 
 Rating: 2 stars. It's cute but Sloane just seemed like an (understandably) not so great person, while Emily seemed really dependent on others for her identity.