Celebrity breakups have always been the prime focus of the media, especially when it happens between two high-profile celebrities like Justin Bieber and Selena Gomez; Tom Cruise and Nicole Kidman; Brad Pitt and Jennifer Aniston; and Britney Spears and Justin Timberlake, among others.These celebrity couples were once considered Hollywood's sweethearts, however, a drastic turn of events in their relationships resulted in their heartbreaking splits. These breakups broke the hearts of fans all across the globe and became the talk of the town.Some of them even turned into nasty post-divorce fights, like that of Johnny Depp and Amber Heard and Miley Cyrus and Liam Hemsworth.