One attendee, Instagram user YoungBeardo , snapped the night away, giving us ample evidence to show that Swift and Perry may even be kinda-sorta friends. As the legend goes, Swift has accused Perry of sabotaging her tour by stealing her backup dancers, thus making Perry the inspiration behind Swift's 2015 banger, "Bad Blood." In September, Perry answered a fan on Twitter , teasing that she would totally do a collaboration with Swift, but only if Swift says sorry first As for Mayer, he grinned and bore the whole night with two exes in the mix. Mayer and Swift are both single at the moment, but it didn't seem like they rehashed any buried feelings for each other. Apparently Mayer may instead pursuing another frenemy of Swifts : Demi Lovato.In any case, we're proud of the three singers for quashing any sour feelings — if only for Drake's sake.