Nick is just sick of Mariah Carey excessive partying nature. Even he is blaming Mariah for not getting pregnant and she has gained weight and also has bouts of insomnia.

"Right now the situation is potentially explosive," a source divulged to The ENQUIRER. "They're still very much in love, but their problems are beginning to affect their marriage. Nick is demanding that Mariah cut back on the partying immediately. He hates that he's left to clean up the mess. The day after her boozing sessions is a nightmare for Nick because Mariah sleeps much of the day and then wakes up in a foul mood, and they end up fighting." Well pass her on to me!