Kourtney Kardashian and Scott Disick have split, according to TMZ.
The couple, who have been dating since 2006 and have three young children together, had a troubled relationship that played out over the last 10 seasons of "Keeping Up with the Kardashians" and its spinoff series.
Kardashian, 36, finally decided to end the relationship when the 32-year-old's "partying" started getting out of hand once again, according to TMZ's source, who claims Disick hasn't been to the family's home in over a month. (This may explain those photos of Disick looking awfully cozy with his ex-girlfriend Chloe Bartoli in Monaco last week.)
Sources also confirmed to E! News that the reality TV couple officially broke things off over the 4th of July weekend, telling the website Kardashian believes it's what's best for their children.
"Scott has been running around saying he's single," a source added, "Kourtney dumped him after she saw the pics [in Monaco] and he hasn't been home after a month-long party binge."
Disick has publicly struggled with substance abuse issues for years. Last summer, he briefly entered rehab after a sleeping pill overdose, and following a particularly out of control weekend in Atlantic City, he entered rehab in Costa Rica for a week in March.
"I realize my issues are bigger than me and I'm ready to truly remedy this struggle I continue to battle," Disick said in a press release at the time.
He later addressed the fact that his stay in treatment was so brief, telling People, "The funny thing is, a lot of people were under the impression that I was going to this rehab facility in Costa Rica for a month, when the truth was, I was going for a week for one treatment that they have there."
Reps for Kardashian and Disick were not immediately available for comment.