A sober Scott Disick, just released from rehab, recently spent the night babysitting his three young children while mom Kourtney Kardashian kicked up her heels at LA hot spot Chateau Marmont.

In a complete case of role reversal, Radar Online reports the 32-year Disick spent the evening hunkered down at the same home he was once shared with the mother of his three children,  5-year-old Mason, 3-year-old Penelope and 11-month-old Reign. 

With his sober coach frequently by his side, Disick is reported to have been on his best behavior ever since voluntarily checking himself out of the Malibu rehab facility where he had spent the previous 30 days. After leaving the facility early this week, Disick instantly boarded a private jet for parts unknown.

After at first being talked into returning to the facility by Kris Jenner and other family members, Disick again checked himself out a few hours later, but has vowed to continue receiving outpatient treatment.

On release, one of the first stops he made was to see Kardashian, whom he reportedly reminded he had complied with exactly what she had asked of him by seeking treatment.

"Scott knows that, in order to get joint custody of his children that he has to complete an additional 60 days of outpatient therapy," a source said. "He intends to do just that and says that he is going to stay sober for his kids."

Disick and Kardashian officially called it quits earlier this summer when he spent the Fourth of July holiday weekend openly cavorting with former girlfriend Chloe Bartoli in Monaco. He has since also been romantically linked with teenage model Lindsay Vrckovnik.

More recently, Disick has hinted at hopes of being able to patch things up with the "Keeping Up With The Kardashians" star.