KIM Kardashian has apparently never heard of the phrase sisters before misters.

The Kardashian star has been slammed online for starting a relationship with Odell Beckham Jr., after Kim’s younger sis Khloe dated the NFL star years earlier.

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Odell Beckham Jr. (left) and Kim Kardashian (right) arrive back at her hotel togetherCredit: Splash

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Khloe Kardashian got romantic with Odell years earlierCredit: Hulu

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Khloe flirted with Odell in 2016Credit: TMZ/AKM-GSI/Backgrid
Kim, 43, seemingly confirmed her relationship with Odell, 31, in a new social media post, sent out on Super Bowl Sunday.

But Khloe, 39, might have come first.

In 2016, rumors spread that Khloe and Odell were a thing after the reality star was photographed sitting in his lap at Drake’s Memorial Day holiday party.

They were also spotted together at Scott Disick’s 33rd birthday party in Las Vegas just a few days earlier.

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Kardashian fans in a Reddit chat room called Kim out for her new hookup with Odell.

“Ugh, Kim picked up Khloe’s sloppy seconds,” one person ranted.

“Disgusting,” another blasted. “Seriously, I would never touch a man a friend of mine has touched, even less one of my sister’s exes.”

“They’re revolting,” one person said, referring to the entire family.

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“The way they swap men is just so weird,” another reasoned.

KIM’S CATCH

But Kim doesn’t appear to care about any so-called “girl code.”

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On Sunday, Kim celebrated the Super Bowl with an Instagram post of herself catching a football.

In the snap, the Skims mogul spent the night outside by the pool in a pair of loose-fitted ripped jeans and a teeny black bikini.

“Game time,” she captioned her post while adding a football emoji.

Many fans thought this post revealed her current relationship status as she has been rumored to be dating Odell.

“OBJ and Kim K,” another commented with a hand-heart emoji.

A third said, “She’s confirming new boo.”

SNEAK PEEK

Over the weekend, Kim and Odell were photographed at their hotel after sneaking into a Super Bowl party in Las Vegas, the U.S. Sun exclusively reported.

The Kardashians star showed up late in the day to the Fanatics party at the Marquee Day Club at The Cosmopolitan on Saturday.

The U.S. Sun obtained exclusive images of Odell entering solo, while insiders say Kim and Justin Bieber separately entered the venue via a different entrance.

Photographs also show the pair arriving back at their hotel, The Wynn, together after the bash, as Kim kept her head down while wearing a wide-brimmed black hat and low-cut dress.

“The party is the hottest Super Bowl party every year, but nobody expected them to show up,” the source said.

“I didn’t see them interact but I saw Odell with his boys and Kim arriving. It was later on as the party was already in full swing.”

GRAMMY GOODNESS

Most recently, Kim and Odell were seen together at a party for the Grammys in West Hollywood.

Sources confirmed the two were seen kissing during a recent outing at a private members-only club.

“Last Thursday they both arrived at Birds Street Club in West Hollywood separately but got a table with Khloe and were openly kissing and getting cozy,” an insider exclusively told The U.S. Sun.

“Plenty of guests saw them together but it was the perfect date place because it’s a private members club with a strict no-photo policy.”

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“It’s the same spot Kendall and Bad Bunny were first seen kissing, so she’s taking a leaf out of her sister’s book when it comes to dating,” the source added.

“Although they haven’t stepped out in public, they’ve not really kept it behind closed doors either.”

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Kim spent the weekend in Las Vegas for the Super BowlCredit: BackGrid

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She tried to keep her head down and hidden, but she was still spotted with OBJCredit: Splash

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Odell and Kim were caught at a pre-game partyCredit: The US Sun