Life & Style can exclusively reveal that on Jan. 27, Katy Perry arrived alone to the afterparty for Muse’s LA concert at Pink Taco and spent the night cozying up to the band’s drummer, Dominic Howard [pictured left]. “They were all over each other,” an eyewitness tells the new issue of Life & Style. “I was shocked to see her acting so affectionate with another rock star because I thought she was dating John Mayer.”
 
A partygoer tells Life & Style that Dominic “wasted no time zeroing in” on the “Firework” singer as soon as she sat down in a private booth alongside Muse singer Matt Bellamy and his fiancée, Kate Hudson.
 
“Katy had her arms around Dominic, and they were facing each other, bodies touching,” the eyewitness tells Life & Style. “He had his eyes on her all night. Katy loved all the attention.”

 EXCLUSIVE: John Mayer goes behind Katy Perry's back with another woman

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So what about John? Although the couple has been inseparable for the past several months, and John even accompanied Katy to the presidential inauguration in Washington, D.C., last week, a source tells Life & Style that Katy is fully aware that “he [John] plays games.”

While leaving Pink Taco with Dominic at 4 a.m., a fan shouted to the pair, “Katy, are you going to marry John?” An insider tells Life & Style, “The singer giggled as she pointed to Dominic and answered, 'I’m going to marry him!'"
 
For more on Katy and Dominic’s hot night out, pick up this week’s issue of Life & Style, on newsstands now!