If you saw Selena Gomez's tearful performance [1] of her hit "The Heart Wants What It Wants" at November's American Music Awards, you know the singer is opening up like never before. But now we know that what we saw on stage was nothing compared to what she went through to prepare. Selena shared her AMAs tour diary, a video that offers a sneak peek at the preparation that went into her dramatic rendition. Take a look to see an intimate and emotional side of Selena that may just have you in tears too. Watch the heartrending diary now, and then check out more must-see viral videos [2].