US OK! Magazine has made the shocking claims and alleges Corey, who works for Justin Bieber, is getting 'restless' and wants more cash.
A source told the publication: "He has been babysitting Kris' kids and even runs errands for her and acts as her official masseur. He figures what he is being paid is nowhere near enough."
Their relationship is said to be "crumbling" and he is reportedly making more and more demands from Kris.
Kris and Corey looked happy during a family movie night recently, watching The Brothers Grimsby with controversial star Sacha Baron Cohen and his wife Isla Fisher, as they laughed out loud at shocking scenes.
They were also pictured at Paris Fashion Week and cuddling up together at Kanye West's Yeezy 3 show in New York City last month.
Is there really trouble in paradise?