Kris Jenner's secret sister Karen Houghton has dropped another bombshell about Kris.

Houghton told Star  that the Keeping Up With The Kardashians star cheated on Bruce and fessed up to it.

"Kris has admitted to cheating," Houghton slipped. "I do not believe that [he] has ever cheated on Kris ... And I don't think he ever will, if they stay together." 

"It's so funny because I could never see a guy cheating on her. She's so powerful."

Houghton said if the former couple decides to divorce, neither one of them will have trouble meeting new partners, adding that Kris will nail a new man quickly.

"Bruce will find someone else. But I guarantee you, Kris will find someone in two days. I promise!" 

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Houghton said Bruce is the "nicest guy" but added that she believes Kris cheated because she is stressed out over family issues.

"Kris has a hole in her," she said. "The stress was beyond what any mother could take."

"And then, you know, Kanye had moved in with Kim, so the house was kind of crazy, and I think there was too much on her plate," Houghton explained. "And then Bruce moved out ... I don't think Kris knew how to handle it. I think she tried her very best. She's amazing, but I just think she couldn't do it all." 

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Kris announced she and her husband of 22 years were separated in a statement to E! News on Oct. 8. Rumors sparked after they began living separately in June. Kris stays in Calabasas while Bruce has been living in Malibu.

"We are living separately, and we are much happier this way," they said in a joint statement to E! News. "'But we will always have much love and respect for each other. Even though we are separated, we will always remain best friends and, as always, our family will remain our number one priority."

Kris told Us Weekly on Monday that they have been apart for one year.

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Watch Kris Jenner's secret sister Karen Houghton discuss her separation from Bruce Jenner here: