No matter how great your Memorial Day weekend was, it probably wasn't as good as Katy Perry's . According to various reports, she spent Sunday of Memorial Day weekend with Robert Pattinson , and Monday of Memorial Day weekend with her ex, John Mayer .
People magazine reports that Katy and Robert were seen together on Sunday in Montecito, California, watching the wedding rehearsal of two strangers. A guest at the rehearsal said the two were dressed "very casually," and they just "sat together and watched." Katy and R-Patz are friends; while it has been rumored that she was a factor in his breakup with Kristen Stewart , she's friendly with both of them.
According to US Weekly , Katy followed that incident by hosting a barbecue on Monday at her Hollywood Hills home where the guests included her ex-boyfriend, John Mayer. A source tells the magazine , "They seem to be back together -- or back together-ish. They were very flirty and having a really good time together. They have good chemistry." Another witness tells the magazine, "They were definitely friendly."
Among the other guests at Katy's barbecue were former The Office stars Mindy Kaling and BJ Novak ; Raising Hope's Shannon Woodward -- who's one of Katy's best friends; 2 Broke Girls star Beth Behrs; and Girls star Allison Williams and her boyfriend, CollegeHumor.com's Ricky Van Veen .
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