It's on, it's off, it's on again. We can't keep up with what is going on between Katy Perry and John Mayer.
And while something is definitely going on between them, the pair didn't exactly look in the mood to celebrate as they headed out for lunch for his birthday yesterday.
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As John turned 35, the pair were spotted leaving New York's trendy ABC Kitchen.
The couple have been linked since June, but have been reported to have broken up and gotten back together several times.
They first dated back in 2009 before Katy married ex-husband Russell Brand.
