Nick talks about his ex-wife Mariah Carey's new romance with toyboy

Mariah Carey split from her billionaire fiancé James Packer in October 2016 after an 18-month love affair.

The 46-year-old then quickly moved on to backup dancer Bryan Tanaka – who is 13 years her junior.

But Nick "isn't buying that s***".

“It feels like they wrote the story. That s*** is like a soap opera”Nick Cannon

The America's Got Talent presenter blasted his ex's relationship on on Howard Stern's SiriusXM radio show.

He said: "I don’t even get into it. It feels like they wrote the story.

"That s*** is like a soap opera. I don’t buy none of that s***."

Mimi – who divorced Nick last November – has been parading her new boy toy ever since her split from Packer.

Despite being engaged at the time, Tanaka was gunning for a romance with the Touch My Body songstress on Mariah's reality show, Mariah's World.

Mariah's eight-part series came to a dramatic close last month with the mum-of-two breaking things off with Packer.

But she didn't mope around for too long, as she hooked up with Tanaka giving him a passionate peck on the beach.

But don't ask Nick's opinion on Mariah's reality realm – he thinks her show is just as "fake" as her relationship.

He added: "First of all, I think the whole reality show is fake. I’m a producer, so I know how [it works]."