The America's Got Talent host spoke with The Insider's guest co-host Chris Spencer, and was candid about his crumbling marriage with Carey.
"There's trouble in paradise…we have been living in separate houses for a few months," Cannon, 33, said.
But — the father of two denies that infidelity has anything to do with it and was quick to say his kids are his priority.
"My main focus is my kids," he said.
Cannon and Carey, 44, were married in 2008 and have 3-year-old twins together; Monroe and Moroccan.
As Radar previously reported, the couple has been "fighting a lot" and a split appears to be imminent.