Just two months after her breakup with on-again, off-again boyfriend John Mayer, Katy Perry says she’s single and ready to mingle — even if it means resorting to hitting up Tinder, one of the most popular dating apps. Speaking Power 105.1’s The Breakfast Club, the “Dark Horse” songstress confirms she’s indeed back on the dating scene. When the radio DJ asked if she was unattached,Perry said,Uh, yes I am!” “I’m really deep on Tinder so I don’t have a whole lot of time.”