Mariah Carey has expressed concern over Nick Cannon's recent discussion of his celebrity sex list, and wants the actor to keep his ''whoreish'' past to himself.

The 'Hero' hitmaker has expressed concern to her husband of six years after he shamelessly discussed his previous sexual partners, which include Kim Kardashian,Christina Milian and Nicole Scherzinger, during a radio interview on Power 106.FM last week, as she wants him to keep their sex life private.

Speaking on Mariah's reaction to his sex list, Nick told Huffington Post Live: ''[Mariah] said to me, 'Oh yeah, by the way could you keep your whore-ish past to yourself if you're doing any interviews?' I was like, 'Got you.'''

Nick - who has twins Moroccan and Monroe, two, with Mariah - admits being ''brutally honest'' does get him into trouble, but defended his decision to discuss his sex list by insisting his dating history is already public knowledge and he was in a loving relationship with all the celebrities he named.

He added: ''I'm brutally honest. I'm honest to a fault. [But] that's old news. Everybody I named I was in a relationship with, in love with, had been seen on red carpets with, had done several interviews with, so it wasn't like it was this big revealing list like I was Lindsay Lohan or something.''

Meanwhile, the 'America's Got Talent' host insists being quizzed on his sexual history was inappropriate because he's married and argues Brad Pitt - who has been with Angelina Jolie for 10 years - doesn't get probed on his sex life.

Nick added: ''You wouldn't ask Brad Pitt these questions, because he's got one hell of a list.''