Have Katy Perry and John Mayer ended their romance yet again? According to eyewitnesses, Katy was seen flirting and with Muse drummer Dominic Howard just last night.

Life & Style was the first to report the news, claiming that Perry was spotted at the band’s after-party for their L.A concert and was acting quite affectionate towards Howard.

An eyewitness told the magazine, “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.”

Perez Hilton says the pair was joined by gal pal Kate Hudson and her musician husband Matt Bellamy, who also performs in Muse as a singer, guitarist, and pianist.

So, has Katy’s relationship with John Mayer officially ended, or was the singer caught cheating?

According to Entertainmentwise, the news is purely gossip. The website says, “We find this one really hard to believe” and even went so far as to accuse Life & Style of making the whole thing up!

So, what do you believe?