John Mayer and Katy Perry grabbed lunch at NYC's ABC Kitchen today. It was a special meal in honor of John Mayer's 35th birthday. John and Katy's romance has been on and off since they got together over the Summer, but it seems she's by his side to help him mark his big day. Katy and John hung out in the Big Apple over the weekend, too. John and Katy went out to dinner and a club Sunday, and he was reportedly spotted feeding her food off his fork during the meal at Perla.