It's the end of an era! Kourtney Kardashian has reportedly called it quits with her longtime boyfriend Scott Disick.

A source told TMZ that "his partying lately has made her make this tough decision." Disick, 32, is the father of three children with Kardashian, 36. 

This news comes shortly after Disick was spotted over the Fourth of July weekend getting super cozy with his ex-girlfriend Chloe Bartoli in the South of France. Disick was photographed sharing a lounge chair with her and rubbing her back. The two were also spotted feeding each other pasta by hand.

Disick dated Bartoli in 2006 while on a break from Kardashian.

Kardashian is reportedly blaming Disick's friends for his destructive behavior. Disick reportedly hasn't been back to the family's house in Calabasas, Calif., in more than a month and has been telling people he was "single."

"Kourtney has always taken Scott back and been by his side, but now with three kids it has gotten old," a source told E! News. "Kourtney has to do what's best for the kids. Scott has been running around saying he's single. Kourtney dumped him after she saw the pictures and he hasn't been home after a month-long party binge."

Kardashian and Disick have been together since 2006 and they have three kids - 5-year-old Mason, 2-year-old Penelope and 6-month-old Reign. Their rocky relationship has been publicized in the media over the past several years.

"When he's sober he's actually a great dad," an insider said, according to Us Weekly. "This was an escape for him, a way out. Kourtney is flipping out and going crazy and says she's done with him, but they've been through this before. He just hasn't publicly embarrassed her like this and to this level. She says it's over, but I know they will end up getting back together for the kids and the show."

 Kardashian has not addressed the split publicly.