John Mayer is Pasternak Pretty

John Mayer gets his butt whipped into shape by celeb trainer Harley Pasternak during a run on Saturday (April 25) through Santa Monica, Calif.

The 31-year-old singer reportedly has been seeing 23-year-old actress cocktail waitress and actress Scheana Marie but John has denied having a girlfriend.

“We’re friends,” Scheana tells People. “He’s a great guy. He’s funny and sweet.”

Scheana also guest stars as a pizza delivery girl of the Jonas Brothers’ dreams on their upcoming TV show JONAS, which premieres on the Disney Channel on May 2. (Marie‘s episode airs May 16). Check out the Pizza Girl video featuring Scheana at JustJaredJr.com. 10+ pics inside…