It's Over! Kris Jenner Dumps 'Boytoy' Corey Gamble — The Secret Reason Why

Cougar Kris Jenner is on the prowl again, as a source close to the Keeping up with the Kardashians matriarch tells RadarOnline.com exclusively that she and her much-younger boytoy Corey Gamble are official over.

RadarOnline.com recently reported that they were having issues, and fans noticed he was MIA at the Justin Bieber roast this past weekend in L.A.

An insider confirmed, "They haven't been an item for a while."

Kris first stepped out with Gamble after her divorce from ex-husband Bruce Jenner, 65, and "It was obvious to everyone that Corey was her rebound," says the source.

"Kris was using him for someone to hold and she was using him for sex. He gave her what she needed for that moment in time."

But, according to the insider, "When Kris started to hear the reports in the media from Corey's ex-girlfriends, she really started to lose interest and see him as a liability."

Though their relationship is done in real life, fans will still see the relationship between Kris, 59, and Gamble, 35, play out on Season 10 of KUWTK, which premiered on E! this week.

Meanwhile, sources say Kris has moved on.

"Kris is an opportunist and she has traded up men her whole entire life," the source says, adding, "She is always looking for something bigger and better."

Do you think that Kris Jenner should date someone closer to her own age? Let us know your thoughts in the comments below.