Justin Bieber and Selena Gomez
Justin Bieber and Selena Gomez's breakup was the breakup of 2013... in our books, at least. Their two-year-long relationship seemed very lovey-dovey, as these photos document, so we were shocked when they parted ways in late 2012. But rumors of a reunion started flying almost immediately, and the couple didn't help the confusion by posting even more sappy photos post-split. Check out the whole chronology here and judge for yourself!