They held hands and even smooched inside his car, but a Kravitz source said it was all in fun.
"They're decades-long good friends. They found it funny and were just being flirtatious and having fun for the cameras."
Earlier, they attended Campbell's Taschen book party with Quincy Jones, Dave Chappelle, Kim Kardashian, P. Diddy, The Weeknd and Kelly Rowland.
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