John Mayer is ready to put a price on the sordid details of his relationship with Jennifer Aniston, claims a U.S. tabloid.

The singer - who was reportedly dumped by Jen last week - plans to air his dirty laundry in public for the indecent amount of $10 million, if reports are to be believed.

John is said to be planning to dish the dirt on Jen's body obsession, her constant makeovers and the time she apparently referred to him as 'Brad' in bed.

A source tells Star, "John just can't keep his mouth shut. and he's telling friends that he's thinking of going public with all their juicy secrets."

However, John's publicist denies claims he intends to publish a tell-all on his A-list ex, telling PerezHilton.com the story is  "a new low" for the magazine.

Still, John is no stranger to speaking out about his on-again, off-again affair with Jen.

Shortly after they split last August, he told reporters that he dumped the actress because they had "different chemistry."

See Johnnifer's love story below