Not all celebrity friendships are built to last.
Just like regular people, stars sometimes grow apart... and/or have a major blowup that ruins a once-tight relationship.
It happens to all of us. And it happened to the following pairs of very famous people:
Heidi Montag and Lauren Conrad
Was this best friendship ever real? Or was it as fake as the series on which they once starred, The Hills? We may never know. But we do know that when one half (Heidi) makes up a sex tape rumor about the other half (LC), the odds of a friendship lasting are not strong.
Demi Lovato and Miley Cyrus
Lovato admitted in a 2014 interview with Entertainment Tonight that she and Miley are now "acquaintances" at best. How come? "People change," she says, and it's true: While Cyrus goes around smoking lots of pot, Lovato is committed to a drug-free lifestyle.
Gwyneth Paltrow and Madonna
When was the last time you saw Gwyneth Paltrow and Madonna together? Exactly. One source blamed this split on Paltrow being "jealous and competitive," while the entire world saw Madonna ignore the actress at the 2013 MET Gala.
Denise Richards and Heather Locklear
Denise Richards and Heather Locklear were very close. Until, that is, Richards started dating Locklear's ex-husband, Richie Sambora. It so often comes down to a man, doesn't it?
Katy Perry and Taylor Swift
At this point, it seems impossible to believe Katy Perry and Taylor Swift were once close. They have grown into bitter enemies, allegedly because Swift thinks Perry stole one of her backup dancers.