Mariah Carey and Nick Cannon may be splitting up after six years of marriage. People close to the couple say it certainly looks like their marriage is in trouble and they've been living separately.

There have been other signs lately suggesting the end may be near. The couple recently put their $13 million mansion up for sale and fans on social media have noticed that they haven't been photographed together in several months. There are also rumors that Nick has been living at his grandparents' house. And then there are the cheating rumors. There's word that Mariah recently hired one of her security guards to keep him away from other women. 

The 45-year-old singer and the 33-year-old host of America's Got Talent are parents to four-year-old twins Moroccan and Monroe. (Page Six)