Kris Jenner is not the only one that has moved on since she separated from Bruce Jenner.

A source revealed that while Kris has been gallivanting among the likes of Drake, Bachelor star Ben Flajnik and Britney Spears' ex Jason Trawick, Bruce has been keeping company with his ex-wife Linda Thompson.

Thompson, whom Bruce married and later divorced in 1984, is the mother of his two sons Brody Jenner and Brandon Jenner.

The foursome has been spending quality time together ever since Bruce moved to Malibu, said an insider.

"Bruce has been spending a lot of time with Linda and the boys in Malibu over the last few months," a Jenner family insider told Radar Online. "Linda has lived in Malibu for decades and leads a very normal life, away from the spotlight - the opposite of the Kardashians and Jenners."

"Both Brandon and Brody are happy to finally be able to spend time with their parents together, after all of these years," the source added.

According to the insider, Kris has always been "insanely jealous" of Thompson, who previously dated Elvis Presley after she won the Miss Tennessee USA title in 1972. Following her split from Bruce, she later married music composer David Foster in 1991. Foster is now married to Real Housewives of Beverly Hills star Yolanda Foster.

"Linda is not only drop dead gorgeous, but she is one of the kindest people on the planet," the source shared. "It's not sitting well with Kris that Bruce has been spending time with Linda."

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Kris has no reason to fret--at the moment, Bruce and Thomspon's relationship is purely platonic.

"There is nothing romantic going on between the two at this time," added the insider. "However, Bruce has always had a special place in his heart for Linda and admires what an amazing mother she is to their sons."

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Kris announced the news 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.

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