By Adam S. Levy

Breaking Celebrity News Staff Writer

Cameron Diaz appeared on The Late Show with David Letterman on Monday, and told the Indiana funnyman she’d give him “an exclusive” on why she fed her baseball slugger boyfriend Alex Rodriguez popcorn at this year's Super bowl.

It was this past February in Arlington, Texas where Diaz, 38, was famously caught on camera feeding her Rodriguez popcorn, as they watched the Packers and Steelers go at it.

Diaz told Letterman that when A-Rod went in for one of the final pieces of the movie snack, Diaz got protective of her popcorn, but then had a change of heart, telling the Yankee third baseman, "I love you t