It looks like Scott Disick still likes to keep up with the Kardashians, even though he is no longer together with his former long-term girlfriend and the mother of his three children, Kourtney Kardashian. There's a new report that says the newly-singled reality star was spotted enjoying a night of some heavy partying with Kourtney's little sister Kylie Jenner and her boyfriend, rapper Tyga.

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According to Xpose on Sunday, the trio was spotted living it up at 1 OAK in Los Angeles, celebrating The Weekend's "Beauty Behind The Madness" album launch at the club.

And while Scott has been partying with Kylie and Tyga, it looks like his young son Mason is missing him at home. The report also says that the young tot is having a hard time understanding why his parents split as Kourtney has hired a therapist to help her children go through this new transition in their lives. Kourtney and Scott also have two other children, Penelope, 3, and their 8-month-old son Reign.

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A source close to the Kardashian family said, "Mason is very close to his dad and keeps asking why he isn't living with them anymore. He was an only child for two years, and Scott was around a lot more for him. But Kourtney is 'convinced it'll be good for Mason and is already seeing the benefits.''

The insider added, "A therapist can explain things to him and help him learn to express himself. [Scott's] barely been there since Reign was born and Penelope has always been very close to Kourtney. [Mason's] a sensitive little boy.''

So far, Kourtney herself has not made any comments about the therapy rumors. Keep up with Enstars for all the latest news on your favorite Kardashians.