Is there trouble in paradise for Mariah Carey and Nick Cannon?

A source for Mariah told E! News, "They have been living apart for a while. This is not all of a sudden. There have been issues between them for a while. They are not getting along."

The source added, "She wants to end it and it has been in the works for months, which is why her house in the Bahamas and the house in Bel Air are on the market."

In a May interview with Parade magazine, Cannon blew off any speculation of issues in their marriage, telling Parade, "You kind of have to ignore it because every week it's something different, and if you paid attention to it, it actually probably would start really affecting you...There's no merit or truth to it. It's kind of humorous, really. It couldn't be further off from the truth, and it really affects the credibility of the so-called newspapers." 

The couple have been married for six years and are the parents of 3-year-old twin sons, Monroe and Moroccan.