Mariah Carey and James Packer wedding rumours

But, we'll still take reports that Pariah - that is the anomaly of a romance that is Mariah Carey and James Packer - are already talking marriage with a serious grain of salt.

Seriously.

"Mariah Carey doesn't waste time ... just days after she hopped on a yacht with new billionaire BF James Packer, they're already talking marriage," TMZ is reporting.

"Our Mariah sources say it's insane ... they've been "dating" for just a matter of days, but he's already told her he wants to marry her, sooner rather than later. The soonest can be when she's officially divorced from Nick Cannon. But we're told Mariah is open to tying the knot with James."

The 47-year-old businessman allegedly met 45-year-old Carey at one of her shows in Las Vegas 1½ months ago and has been "aggressively" pursuing her ever since.

Just a stones throw from the place he married his second wife, Erica Packer, almost eight years to the day, he continues to mount what must surely be one of the most global PDAs (Public Displays of Affection) since his good mate Shane Warne slobbered all over his former fiancee Elizabeth Hurley.

Packer and his new paramour, have been photographed wearing matching bathrobes at the "captains table" of his superyacht The Arctic P, though incongruously Packer keeps his sunglasses on despite it being pitch black.

In another shot, which has also conveniently made it onto TMZ, we see him seemingly about to "pepper" Carey's neck in kisses in a shot which is just a little too close for comfort.

Having spent the first half of the week bobbing about Capri, Packer and Carey are now off the shores of Cannes on the Cote d'Azur.

Cannes is currently hosting the international Lions advertising festival, with plenty of Australians in town.

Those who have been near the huge former ice breaker report hearing Carey's various hits on a constant loop blaring from the Arctic P's speakers.

Last night they partied in Cannes, where Carey, who has taken her four-year-old twins along for the ride, uploaded a picture of the pair with friends. Interestingly, she hashtagged #JamesPacker in the shot.

Carey separated from her husband of six years, Nick Cannon, last year while Packer ended his six-year marriage to Erica Baxter in 2013.

Oddly, Packer's first wife, Jodhi Meares is on board the boat with the new couple, as is a reported ex of Carey's, American filmmaker, Brett Ratner.

Whether or not the wedding rumours are true, who knows. Stranger things.

One thing is for sure, it is certainly a circus.

with Andrew Hornery