New couple alert: Jessica and John Mayer

Jessica Simpson is officially dating John Mayer, according to US media reports. "She's tiptoeing back into the dating world," says a source. "It's the first stage. She's never been happier." Simpson is in NYC promoting her album, but has been forced to cancel a number of performances due to laryngitis. John Mayer also canceled a concert on Saturday in Connecticut because of laryngitis...coincidence? The Dukes of Hazzard actress reportedly told US Weekly that Mayer was great and that she wanted to "keep it private." The newly divorced singer also announced on a Texas radio station that she had heard Mayer's new album, Continuum, which will not be released until September 12.

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