John Mayer was seen chatting up Kourtney Kardashian at GQ's Men of the Year party last week.
An eyewitness tells Us Weekly that the 41-year-old "seemed very into her" and told the 39-year-old mother of three that their crossing paths was "sweet serendipity."
He also suggested they should "meet up again soon." Another insider claims that Mayer is "crushing hard" on Kardashian.
Scroll through the photos below GQ posted to see John Mayer and Kourtney Kardashian at the party.