she's done with backup dancer bryan tanaka.her ex, had doubts. >> i thought it was bizarre as somebody watching from afar. i thought the show fabricated a lot of stuff. i don't know what the relationship actually is. >> yeah, nick isn't exactly alone. but little over six months after mariah and billionaire james packer broke up and she went on to date bryan on "mariah's world," this pair has called it quits. the reason? a source close to the former couple claims bryan was using her for her fame and had long been jealous of mariah's close relationship with nick cannon. >> most men are jealous of me. i'm in new york. i didn't hear about this. >> back in february, i asked mimi point-blank about rumors this was all for show. >> in about interview, you referred to him as your boyfriend. >> i would say he's my boyfriend. kevin, if i refer to him as something, then wouldn't that be what i was referring to him as? >> whatever they were, sweet, sweet fantasy or the real deal, neither bryan or carey's rep would comment on the split. but