Insiders say trouble began in March when Nick appeared on Big Boy's radio show. During a game, Nick revealed five celebrities he had slept with. Mariah was reportedly humiliated by one of his confessions… Kim Kardashian.
To make matters worse, Nick went on the Howard Stern show and told the shock jock that Mariah wouldn't sleep with him before they got married. In TMZ's words… Carey went “nuclear.”