You know how Rihanna asks if her paramour is hiding from her in 'Where Have You Been'? If he actually wanted to get away from her, a good place to take cover would be Kanye West's dressing room -- because rumor has it that Kim Kardashian won't let RiRi near it!

The Sun reports that Kim K. banned Yeezy from letting Rihanna into his dressing room during his stint at London's O2 Arena with Rihanna's mentor, Jay-Z. A source told the tab, “Kim is incredibly protective of Kanye and doesn’t want any women near him unless she is there -- even his friends. Rihanna wasn’t even allowed to go into his dressing room without Kim being there," the spy added. "The fact she was linked to Kim’s brother probably didn’t help." Wait, what? Wasn't that Rita Ora? And didn't they get along well?

In any case, the source gave a reason for the female ban. “It’s crazy, but Kim knows the attention Kanye gets when he’s on tour," the source said, "and she doesn’t want any competition.”

Maybe Kimmy's a little paranoid since West's ex, Amber Rose, claims that Yeezy and K.K. each cheated with the other. After all, the old adage says if they'll cheat with you, they'll probably cheat on you.

Of course, that's assuming any of this story is true whatsoever. We're taking it with a grain of salt, especially since Kardashian was rumored to be feuding with Beyonce as well -- and they were spotted hugging over the weekend!