John Mayer Serenading Nicole Scherzinger?

John Mayer eats at Dan Tanas in West Hollywood with some guy friends on Thursday.

Earlier this week, the 30-year-old musician who has previously been romantically linked to Jessica Simpson and Cameron Diaz, was seen with Pussycat Dolls star Nicole Scherzinger, 29, at a Los Angeles nightclub Villa last week.

John‘s 2008 summer tour will begin July 2 at Milwaukee’s Summerfest.

Also this summer, a new CD/DVD & Blu-Ray package will hit stores, featuring a December 2007 show at Los Angeles’ Nokia Theatre.

More pics inside of John after dinner with his guy friends…