Jessica Simpson has slammed tabloid reports she is dating singer John Mayer and insists the two a... Simpson denies dating Maye

Simpson appeared on the first day of the 10th season of the show as a favour to new co-host Rosie O'Donnell, who supported her when she was first starting out.

The American publication featured Simpson on the cover last week with the headline, 'I'm in love,' referring to Simpson's reported new relationship with Mayer.

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