Kourtney Kardashian is reportedly a single woman.
Sources said Kardashian and Bendjima went through a series of "ups and downs" following their trip to Europe in June.
"Kourtney and Younes have been arguing since coming back from their big Italy trip and have truly not been getting along," an insider said.
"[They] decided to take time apart but ultimately it led to a split."
"He has always had a problem with this," an insider said. "This is the stuff they argue about and what made them split in the past."
TMZ said Bendjima got close to model Jordan Ozuna Monday in Mexico.
"Younes and I are not involved romantically at all. We were both invited to Mexico or a mutual friend's birthday party with 13 other people," the model said.
"It was nothing more than friends having fun at the beach. No, we aren't romantically involved in any way, shape or form," she added.
Kardashian is parent to three children, 8-year-old son Mason, 6-year-old daughter Penelope and 3-year-old son Reign, with her ex-partner Scott Disick.
She and Bendjima met in Paris in October 2016 prior to her sister Kim Kardashian's robbery.