Holidays certainly have a tendency to bring people back together!
Katy Perry and her ex-love John Mayer spent Memorial Day at her new Hollywood home, where they were allegedly getting very "friendly" and "flirty." Are they back together? Find out here: Katy Perry & John Mayer Flirt At Memorial Day Party
More from YourTango: See Jenny McCarthy's Dazzling Engagement Ring (Photo)
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