A secret-sharing app revealed that Gwyneth Paltrow is possibly not being faithful to husband Chris Martin.

The secret read, "Gwyneth Paltrow is cheating on Chris Martin with entertainment lawyer Kevin Yorn. (You heard it here first.)" The secret was released on the Whisper app immediately after Vanity Fair editor Graydon Carter's letter "The Paltrow Affair" was published, which said that though they were doing a piece on Paltrow, there was nothing salacious, said Defamer.

The magazine decided not to run the story that was supposed to be about people's love/hate relationship with the actress.

Rumors of the scandalous story started last year when Gwyneth Paltrow sent out emails telling others not to work with Vanity Fair. "Vanity Fair is threatening to put me on the cover of their magazine. If you are asked for quotes or comments, please decline. Also, I recommend you all never do this magazine," said the reported emails.

Paltrow's representatives have denied she is having an affair.

"The story is completely false," the rep said. "Gwyneth knows Kevin casually through business contacts. She is not at all romantically connected to him."

Whisper's editor-in-chief Neetzan Zimmerman stands by the secret, saying that "a person with extremely close ties to Gwyneth who came to us directly after Graydon Carter wrote that missive about why [Vanity Fair] walked away from the Paltrow profile last year."

Paltrow has been accused of cheating before.

She was tied to billionaire Jeffrey Soffer, and reports said she stayed in his $14 million mansion in Indian Creek. Her reps said the story was false, and that they were only longtime friends.

As for how the Vanity Fair rumor got started, Graydon Carter offers his side in the editor's letter.

After the glossy decided to write about Gwyneth Paltrow, one writer was tasked with finding out more information about why people had such strong opinions about the actress. When she started asking around, Paltrow became upset.

"Well, this just released a whole mess of furies," he wrote. "Paltrow sent out a mass e-mail to her show-business friends saying that the magazine was going 'tabloid' following our coverage of Tom Cruise's for the perfect Scientology wife, and Brad Pitt's search for the perfect action-film franchise."

He said the story started taking on a life of its own, with people sending letters and stopping him on the streets to ask about it.

But Carter maintains that these are not the kinds of stories you will find in Vanity Fair.

"And so, sorry as we are to disappoint all those many people out there, for the time being we'll leave it to another publication to roll out the 'epic bombshell' surrounding Gwyneth Paltrow," the letter says. "It's a story I might read. I just don't want to publish it."