12 Pop Star Feuds You Totally Forgot About Because Fighting Over Aaron Carter Is So 2003

They both liked the same guy, Aaron Carter, and… it didn’t end well. Allegedly, Carter left Duff for Lohan because he “got bored,” and this didn’t exactly bring the two reigning queens of teen together. And as we all know, Carter would later live to regret this decision, and end up giving us all kinds of secondhand embarrassment when he professed his undying love for Duff on Twitter.

Well, we all know where this one started.

As it turns out, Nicki Minaj and Mariah Carey hated each other from the second they first took their seats in the American Idol judges chairs, and it all went downhill from there.

Also known as the most heartbreaking feud of all time. Britney Spears and Justin Timberlake were obvs meant to be… until, of course, they broke up in 2002 and shattered all of our dreams of the most perfect union ever.

Timberlake eventually wrote “Cry Me A River” about their breakup, and now that Timberlake is married to Jessica Biel, all hopes of a reunion are pretty much down the drain.

This is a throwback to the days of the supposed love triangle between Cyrus, Gomez, and Nick Jonas… and it definitely doesn’t sound like Cyrus is over it.

On her most recent tour, she sang her song “FU” while slinging around a cardboard cut out of Gomez, so it’s probably safe to say they won’t be sending each other heart eyes emojis anytime soon.

It’s kind of odd that these two would even cross paths enough for a feud to exist, but it totally happened.

It all started when Aguilera dissed Eminem in a special about the making of one of her very first singles ever, “What a Girl Wants,” and Em got annoyed that she was talking about his personal life. Cue a few rude raps on Eminem’s “The Real Slim Shady” about Aguilera.

Justin Bieber and his various feuds with different celebs could make a book all on their own, but Drake Bell was one of the most vocal in the fight against Bieber.

Bell wasn’t shy about slamming the singer on Twitter at every opportunity, and Bieber’s fans attacked in force. If there’s anyone you don’t want to mess with, it’s Beliebers on a mission.

Selena Gomez and Demi Lovato used to be BFFs, but when Gomez started buddying up to Taylor Swift, Lovato was less than impressed.

This eventually led to one of the most cringeworthy moments ever: Lovato replying, “Ask Taylor” with a fake grin when a fan asked how Gomez was doing. Ouch.

Homegirl can write a catchy tune, but Rihanna kind of scares the hell out of me… which is why my thoughts are with Ciara if she is, indeed, on RiRi’s bad side.

After Ciara said Rihanna wasn’t very nice on Fashion Police , Rihanna didn’t hesitate to blow up Ciara’s Twitter in revenge.

This feud is more sad than anything else.

After their breakup, Cyrus created a Nick Jonas-themed music video for her single, “7 Things,” in 2008, and years later in 2013, Jonas came up with his own Cyrus song — “Wedding Bells,” about finding out that Cyrus was engaged to Liam Hemsworth. That relationship obviously didn’t work out, but now, Jonas seems pretty happy with Olivia Culpo, so all’s well that ends well, right?

It's heartbreaking to think that

the stars of the Disney Channel movie The Cheetah Girls were not, in fact, cheetah sisters behind the scenes.

As it turns out, Raven admitted that there were “territorial issues” and fighting that led to Raven opting out of the third movie. Bummer!

This time last year, the fight was real between Miley Cyrus and Sinead O’Connor on Twitter.

If you’re a little fuzzy on the details, it all started because Cyrus compared her video for “Wrecking Ball” to the one for O’Connor’s song “Nothing Compares 2 U,” and O’Connor did not like the comparison. This led to a full blown Twitter war, and as far as I know, it could totally still be happening.

It’s no secret that Gaga is willing to do the rounds with anyone who should come her way, but this time, it sounds like the feud with Christina Aguilera was totally unfounded. When Aguilera was accused of copying Gaga’s look in 2009, Aguilera acted like she had no idea who Gaga was, which is impossible. Who doesn’t know who Lady Gaga is?

“I’m not quite sure who this person is, to be honest,” Aguilera said at the time. “I don’t know if it is a man or a woman. I just wasn’t sure. I really don’t spend any time on the Internet, so I guess I live a little under a rock in that respect.”