Is Katy Perry Over John Mayer?

A celebration of Carole King and her music to benefit Paul Newman's The Painted Turtle Camp held at Dolby Theatre - Arrivals

Are Katy Perry and John Mayer over? Katy and John were seen together just last week at the 2013 Inauguration in DC. Something may have happened, however. Katy was seen getting very cozy with Muse drummer Dominic Howard on January 27. An eyewitness told Life & Style:

“They were all over each other. I was shocked to see her acting so affectionate with another rock star because I thought she was dating John Mayer. Katy had her arms around Dominic, and they were facing each other, bodies touching. He had his eyes on her all night. Katy loved all the attention.”

Someone close to Katy told Life & Style that she knew John “plays games.” Is Katy giving John a taste of her own medicine?