The Forgotten Kardashian: 'Lonely & Isolated' Rob Shuns 'Fame-Hungry' Family & Friends — Inside His Secret Pain

Although the stars of Keeping up with the Kardashians will do just about anything to stay in the spotlight, Kardashian brother Rob, 27, has been slowly retreating from the public eye for months. Now, a source close to the reality star turned sock designer tells RadarOnline.com exclusively, “Everyone is really worried.”

“Rob has pretty much shut out all of his friends and his family,” the insider tells Radar. “He does not have a lot of money because he's not doing anything right now and he wants nothing to do with Keeping up with the Kardashians.”

Due to Rob's extreme weight gain, the source adds, “Rob is so insecure about how big he has gotten and all the rest of them care about is how skinny they are. It makes him sick.”

“He wants nothing to do with any of them aside from Khloe,” the family friend says. “Rob thinks that his whole family sold out to the fame and wealth and says his father would roll over in his grave if he saw what has happened to their once tight family.”

“He is living with Khloe right now because he really has no one left,” the source says. “Although Khloe is not with Lamar Odom, Rob still is in contact with Lamar and talks to him more than he does his own evil mother.”

Do you think that Rob Kardashian has abandoned his family, or is it the other way around?