Scott Disick, ex-flame Kourtney Kardashian and their children met up with friends for lunch at one of their favorite restaurant's, Nobu Malibu, on Saturday.The outing may be the first time the former couple have been seen out together since Disick's recent split from Sofia Richie, whom he dated for about three years.The reality star, who checked in and out of a rehab in less than a week, is said to be trying to keep his life simple as he tries to workout some 'emotional issues' and 'past traumas.' The simple life: Scott Disick, 37, is said to be keeping his life simple following split and work on some 'emotional issues' from Sofia Richie and a stint at a rehabilitation facility in MayA source told People that he seems well and is 'still.