Well, we are now hearing more details of their breakup!
As we wrote, the father of three was spotted getting suspiciously cozy with ex girlfriend Chloe Bartoli in Monte Carlo last week.
Insiders confirm that this, as well as his incessant partying, were the tipping points of the couple's demise.
"Kourtney dumped him after she saw the pics [in Monte Carlo] and he hasn't been home after a month-long party binge."
Furthermore, the decision to part ways was greatly motivated by the welfare of their three kids -- son Mason, 5, daughter Penelope, almost 3, and son Reign, 6 months:
[Image via WENN.]