Inside Mariah Carey and Nick Cannon’s Marital Troubles

Mariah Carey and Nick Cannon


updated 08/27/2014 AT 10:00 AM ET

originally published 08/27/2014 AT 11:40 AM ET

Mariah Carey and Nick Cannon could be counted on for their quirky photos in matching costumes and over-the-top displays of affection, but it seems their good times together have run out.

According to a source, their six-year marriage is on the rocks and “has been bad for a while.”

While Carey, 45, remains at the couple’s Manhattan apartment with their 3-year-old twins Moroccan and Monroe, Cannon, 33, “has been staying in hotels.”

So what went wrong between the pop diva and the America’s Got Talent host?

Another source close to the couple – who surprised fans in 2008 by tying the knot in a secret ceremony just weeks after they began dating – tells PEOPLE that Carey’s professional concerns may have contributed to the tension in their relationship.

“When things don’t go well career-wise, sometimes you turn on your other half,” the source said, referencing the disappointing sales of Carey’s recent album, which was released in May.

“While she can be very down-to-earth and hilarious, she can also be high-maintenance.”


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