Jessica & John: UNFINISHED BUSINESS

Newly single Jessica Simpson is mulling a rebound hookup with ex John Mayer.

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What’s old is new. According to a source, Jessica Simpson, recently separated from her husband of a decade, Eric Johnson, is tempted to revisit an old chapter of her life: her steamy romance with John Mayer. “Back during that relationship, it was all Jessica talked about,” says the source. “John’s still incredibly sexy, and she thinks there’s some unfinished business there.”