By Whitney Johnson

It’s no secret that mean words and angry actions can be detrimental to a relationship. Still, it’s easy to get caught up in the moment and say or do something you don’t mean. Even celebrities are guilty of this inappropriate behavior — and unfortunately, their arguments are often caught by paparazzi and splashed on tabloid covers for all the world to see. In order to learn from their mistakes, here are five celebrity couples that fight dirty:

1. Emma Roberts and Evan Peters: This past summer, the 22-year-old American Horror Story actress and her boyfriend were caught in a violent fight that led to Roberts being booked in a Montreal jail. When the cops arrived at the scene, Peters was found with a bloody nose and a bite mark. Fortunately, no charges were pressed, and the couple remains happily in love.

Related Link: Emma Roberts Arrested After Fight with Boyfriend Evan Peters

2. Mary Delgado and Byron Velvick: Season 6 Bachelor Velvick was engaged to the show’s winner for five years before they finally split in 2009. The couple first showed signs of trouble when Delgado was arrested for assaulting her fiancé in 2007. According to the police report, she was under the influence of alcohol when she punched Velvick in the mouth.

3. Rihanna and Chris Brown: It was hard to miss that infamous picture of Rihanna after an argument with Brown escalated and he repeatedly attacked her following a pre-Grammy party in 2009. Still, the couple reunited and has since been in an on-again, off-again relationship. The pop star most recently referred to the incident as “the biggest wake-up call.”

4. Kourtney Kardashian and Scott Disick: You can still fight dirty without being physically violent, and this reality star couple is proof of that. Thanks to E!’s popular show Keeping Up With the Kardashians, they have to relive their many arguments and sometimes work through the issue more than once — even months after the initial disagreement occurred. Even so, Disick recently told Ryan Seacrest that the couple is “decently happy.”

Related Link: Kourtney Kardashian and Beau Get Therapy

5. Sharon and Ozzy Osbourne: Early in their marriage, during Ozzy’s drug- and alcohol-filled days, the rocker reportedly beat his wife, even trying to strangle her once. Somehow, though, they worked through their issues and have been married for over 30 years, briefly separating earlier this year.

Tell us: What celebrity couple do you think fights the dirtiest?