While he didn't appear to have any qualms being a part of Kourtney's Snapchat story, Rob's social media presence has been sparse since deleting all his Instagram photos
last month. "He goes through his dark periods," the source close to Rob told ET. "He gets depressed and doesn't want to really do anything, doesn't leave the house. It got better for a bit when he first started dating Chyna, but he's in a rut now. He'll snap out of it."