People break up all the time, whether they’ve been dating for two weeks or married for 20. Celebs are no different. It’s sweet to see some couples get past their issues and reconcile, but there are others who should never, ever, ever get back together. Like, EVER.

Miley Cyrus and Liam Hemsworth

Selena Gomez and Justin Bieber

Khloe Kardashian and Lamar Odom

Kylie Jenner and Tyga

Heidi Klum and Seal

Megan Fox and Brian Austin Green

Billy Ray Cyrus and Tish Cyrus

Kourtney Kardashian and Scott Disick

Audrina Patridge and Corey Bohan

Pink and Carey Hart

Arnold Schwarzenegger and Maria Shriver

Chris Brown and Rihanna
Rihanna took Chris back years after he very obviously physically abused her, but because he couldn't keep his other ex Karrueche Tran out of his life, Rih broke up with him. For good. We hope.

Katy Perry and John Mayer
They broke up a couple of times but kept finding their way back to each other. Thankfully, Perry finally woke up from the spell he had cast on her (or maybe she heard her millions of fans, screaming, "Why, Katy? WHY?") and realized she was dating a dude who is notorious for his lady-killing ways.

Courtney Stodden and Doug Hutchison
Courtney was 16 when she had to get her parents' permission to be the 51-year-old’s third wife. Who said romance was dead? They surprisingly stayed together for two and a half years but we think this marriage is officially over. Phew.