The 26-year-old model is the son of Kris Jenner and the brother of Kim, Kourtney and Khloe, reported Radar Online.
"He feels like his family puts TV first and they're incapable of being real. He realizes his expectations in life don't line up with theirs. He feels he needs a clean break," a source said.
"The last year has been so painful. He feels like the family abandoned him when he needed them most. For him, life is more than just a business deal," the source added.