Rumours over a possible split between Mischa Barton and boyfriend Cisco Adler are rife after a nude picture of him winged its way through cyberspace and landed on blogs all over the world.

Mischa was reportedly none too happy about the picture, which is reported to have been among a number of items obtained at an auction of Paris Hilton's belongings after she failed to pay storage fees, and which was subsequently placed on a website.

A source told US Weekly that Mischa was furious and the couple had "a blowup" which resulted in them parting ways, but a report in People magazine claims that the pair are still together.

"They are fine - very happy together," a rep for Adler's record label told the magazine, and the rocker himself has also attempted to pour cold water on the rumours.

"I think it's pretty rock 'n' roll," he told People. "You know, if it was like yesterday I would've freaked out, but then I looked at the picture and I was like, 'Oh, that's from like 2001. Whatever'."

However, he admitted to the New York Observer that Mischa "wasn't too excited, to say the least".

"So yeah, I'm gonna try to keep my pants on from now on," he reassured the paper.

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? Adfero Ltd