Katy Perry and John Mayer Double Date With Allison Williams

People reports that the newly reunited Katy Perry, 30, and John Mayer, 37, recently went on a double date at the Chateau Marmont in Hollywood with Allison Williams, 25, and her fiancé Ricky Van Veen, 33. The girls met up first, and were later joined by their men. Mayer and Perry were all about the PDA, and left together. Their reps are still feeding the "just friends" line. Right. Hope Perry stocked up on some extra bleach for those sheets!