Reports have surfaced that Taylor Swift and her BFF, Selena Gomez, are on the rocks, due to Selena's tumultuous on-again, off-again relationship with Justin Bieber. It's definitely not the first time a celebrity friendship has fallen apart over a guy — Katy Perry and Rihanna's rift was allegedly over Chris Brown, and who can forget the epic Spencer Pratt-related arguments between Lauren Conrad and Heidi Montag on The Hills? Other famous friends like Paris Hilton and Nicole Richie and Madonna and Gwyneth Paltrow have also fallen out in recent years.
Taylor has a steady stream of girlfriends like Emma Stone, Jessica Szohr, and Hailee Steinfeld, but we still hope that she and Selena will patch things up. For now, click through to see 17 celebrities that have had beef with their besties.