Mariah Carey's marriage to Nick Cannon hit the rocks.

It seems there is trouble in paradise for the couple.The picture above is Mariah's sexy birthday message to her husband Nick Canon, which she sent online a few days ago and sent a lot of tongues wagging and speculating on some marriage trouble.
33-year old music mogul, Nick and 43-year old singer, Mariah tied the knot on April 30, 2008 after meeting on the set of Mariah’s music video for her second single “Bye Bye” and have a set of fraternal  twins, Moraccan and Monroe.
According to The National Enquirer, Nick has succumbed to the powerful lure of seasoned professional groupies.

From The National Enquirer:
In a bombshell expose, The ENQUIRER reveals that all is NOT as rosy as Mariah and Nick would want you to believe.
In fact, we have evidence to prove that the 43-year-old songbird has not been wearing her wedding ring recently while getting cozy with some young hunks in the music business. “All this cavorting around with handsome men has Nick seeing red,” said a source. “He’s about at the end of his rope with Mariah.”
Meanwhile, insiders say that Mariah has always been worried about her much younger husband’s wandering eye. And she flipped out when she surprised Nick, 33, on the set of his MTV show and found him flirting with a pretty contestant.

Hope it's all a rumor but you know what they say..there is no smoke without fire...