Scott Disick and Kourtney Kardashian are hanging out together again following his rehab stint.

The former couple was snapped at the book launch party by Rich Wilkerson Jr. in Malibu.

"In a video from the party, you can see them standing together ... and Scott looks totally tame," said TMZ. "They weren't the only big names at the event ... Justin Bieber, Patrick Schwarzenegger and Omarion also joined in."

A previous report from TMZ revealed that Kourtney Kardashian has not closed her doors on a possible reunion with Scott Disick following his rehab.

"We're told Scott spent time with his kids and some of the Kardashians Wednesday night, and seemed like 'a whole new him.' Our source says he's been 'amazing' since checking into rehab last month, and he gets a day off here and there to see his kids," it said.

Following his rehab stint, Scott Disick appears to have started to pick up the pieces of his life back as Us Weekly reported that he purchased a Beverly Hills mansion for $3.69 million.

"Scott bought the house as an investment - he plans to redo and flip it. It's his new career path," the report claimed. "Scott went over finishes and marbles [Tuesday] along with Kourtney and her sisters."

About two weeks ago, Kourtney Kardashian visited Scott Disick in rehab and the "KUWTK" star brought along their kids to see their father.

But People magazine said that Koutney Kardashian's visit to the rehab doesn't mean there's going to be reconciliation.

"Kourtney has no plans to take Scott back," the source claimed. "He is doing well in rehab, and Kourtney is happy that he is finally being serious about his sobriety."

"She is pleased that he is taking care of himself for the kids' sake - that he cares enough about the kids to finally deal with his problems. Kourtney will continue to be supportive as long as Scott stay in rehab. There are talks about at least 90 days."