'KUWTK' Kris Jenner 'Devastated' Ex Bruce Jenner Is Dating Her Best Friend! We Have The Details

Keeping Up with the Kardashians mama Kris Jenner is not going to be happy, perhaps devastated, with this ... or maybe she'll use it for a great episode on her show ... Sources tell People that estranged husband Bruce Jenner is dating Kris's best friend Ronda Kamihira!

"Kris is devastated," the source said. "This was her former assistant and best friend of 20 years."

Bruce is apparently keeping it in the family because their children have known each other for years.

"Kendall and Kylie grew up with her two kids and have been their best friends," the source added.

Kim Kardashian's mama is said to be "sad and completely heartbroken" about the new relationship even more so after Ronda accompanied her on a vacation to Joe Francis's getaway home in Mexico earlier this year.

The new couple was first seen together at an Elton John concert in Los Angeles Oct. 4.

But E! News refuted People's report that the Olympic gold medalist has a girlfriend.

"Ronda is one of Bruce's longtime best friends in the world," a source told E!. "They are definitely not dating. Trust me, anyone suggesting that is barking up the wrong tree."

It was just a month ago Kris filed for divorce from her longtime husband, citing irreconcilable differences.

In a statement, they said at the time, "We are living separately and we are much happier this way. 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 No. 1 priority."

Do you think Bruce has moved on with Kris's best friend, or do you not believe it? Comment below!