Why They Split: Mariah Carey's Billionaire Fiance Was Very Jealous of Her Closeness to A Hunky Backup Dancer

James Packer was reportedly 'jealous' of Mariah Carey's backup dancer and choreographer Bryan Tanaka, a new report claims in the wake of the news of the celebrity couple's dramatic split.

TMZ reports that sources connected with Mariah had revealed the tension between the Australian billionaire and Tanaka that led to a showdown last June.

The site claims that following a loud argument between the two men, 'Packer used his casino ties to get Tanaka banned from Caesar's Palace', where the songstress has a residency.

It has become a very messy and dramatic end to the love story between the 46-year-old songstress and the 48-year-old businessman.

The couple have not seen each other in over a month after a fight while on a romantic European vacation, her spokesperson has said. The pair's engagement unraveled during a stay on a luxury yacht in Greece in September.

TMZ reported Packer allegedly did 'something really bad' that involved Carey's assistant and there are other allegations about his behavior.

Her spokesperson has denied speculation the split was over infidelity and insists the 46-year-old singer's excessive spending was not to blame.

"Mariah and James had a fight in Greece, and have not seen each other since. The fight was not because of any cheating allegations or excessive spending by Mariah," her spokesperson told ET.