Adding petrol to the fire that is Christina Aguilera's alleged lesbianism, Sam Ronson's music producer has come out (unlike Aguilera) and accused the the pair of enjoying a threesome together. Could it be true, or is it yet another urban myth of popular culture - like Fearne Cotton wasn't sent from hell, or that Cheryl Cole can sing?

Only two weeks ago, an either fame-hungry or fictional woman claimed to have been sexually propositioned by Aguilera in a nightclub toilet. And now Marlon David, Sam Ronson's music producer, has sparked yet more rumours about the singer's sexuality, claiming:

"Sam said she had a threesome with Xtina in Mexico last month, that's when she realised she was 'a hot piece of ass'. Sam said Xtina is 'horny as a college freshman'."

And that 'hot piece of ass' can be seen being as 'horny as a college freshman' in an apparently erotic advert for her new perfume, 'Royal Desire', which has got the Daily Mail into a right fix. They compare it to a "low budget soft-porn film", despite the lack of any sexual activity and the only vaguely erotic thing about it being the fact she has a visible cleavage.

See for yourself here while we go and search for the Ronson-Aguilera video elsewhere...