Cameron Diaz Dating John Mayer?

Cameron Diaz and John Mayer are definitely dating, according to a PEOPLE magazine source close to Mayer, as the two have been spotted together several times over the past week.
Mayer, 29, and Diaz, 34, were seen "laughing and talking a lot" at a New York City club most recently, with a PEOPLE source saying "It looked like a casual date. She was giggly. She was laughing and seemed happy." To seal the deal, another source in Mayer's camp bluntly confirmed the dating rumors, saying, "Yes, it's definitely true." Diaz famously dated Justin Timberlake, and recently was involved in a somewhat scandalous relationship with married magician, Criss Angel. Mayer's most public relationships were with Jennifer Love Hewitt, and most recently, pop star Jessica Simpson.