Rob Kardashian is making Khloe Kardashian "smile" this Sunday. On the next episode of Keeping Up With the Kardashians , Khloe tells Lamar Odom that Rob has "disconnected" from her after getting engaged to Blac Chyna and revealing she's pregnant with his child. Lamar tells Khloe to call Rob because he probably won't take his phone call. The two then FaceTime Rob from Khloe's phone and to her surprise, he answers.