Kourtney Kardashian is reportedly fed up with Scott Disick's party-boy behavior.

As she continues to enjoy her new romance with boyfriend Younes Bendjima, the 38-year-old Keeping Up With the Kardashians star has reportedly given her former boyfriend an ultimatum: either get sober or he won't be seeing their kids.

"She's done everything she can to help, and he's rejected the efforts," an insider told Life & Style magazine on Monday. "The only person who can save Scott now is himself."

As the magazine revealed, Disick has reportedly overdosed in the past and years ago, as Kardashian and her sister filmed Kourtney & Khloe Take The Hamptons, he landed in the emergency room after allegedly mixing cocaine, Xanax and alcohol.

Years later, while celebrating the Fourth of July holiday, Disick was partying so hard that he was forced to take regular "trips to the bathroom to throw up."

Meanwhile, Kardashian and Disick's three children, Mason, seven, Penelope, five, and Reign, two, have been caught in the middle of the drama and now, Kardashian is reportedly considering cutting Disick out of their lives completely.

"Kourtney thought it best to separate completely from him," the source explained, "for her sake and the sake of their children."

As for Disick, he's concentrating on his future in showbiz.

“Scott’s written a synopsis for a reality show based around him and Bella hanging out and partying together at clubs,” a source told Life & Style. "She already has a huge social media following. But she wants even more, and Scott’s promising her that won’t be a problem.”

Kourtney Kardashian and her family are expected to reunite in the coming weeks to film the upcoming 14th season of Keeping Up With the Kardashians. No word yet on whether or not Scott Disick will be featured.