So, we're not 100 percent sure John Mayer screwed over Katy Perry, since reportedly the two are in the 'on' phase of their on-and-off romance. The two were never officially confirmed and Mayer hasn't gone to Playboy to do a nice little tell all on Russell Brand's ex-wife ... yet. Has Mayer started to grow up? Maybe the fifth time is the charm! A source says they are still together and "really flirty." We'll see.
Tell us: who do you think John Mayer screwed over the most?
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