Jessica Simpson is in Love

According to the American magazine People, Simpson is now dating singer John Mayer, 28.  A source told the magazine, "It’s the first stage. She’s never been happier."

Jessica Simpson, 26, is divorced from singer Nick Lachey.

Simpson is currently in New York promoting her latest album, A Public Affair.  Mayer will be performing in concert tonight in Jones Beach, and Simpson is expected to attend the show.

The two stars have known each other for several years.  They recently attended the same pre-Grammy party.