When Your Body Is a Wonderland was released in 2002, it won John Mayer a Grammy and made him a bona fide rock star. The song also inspired countless theories over who it was about which hes now clarified once and for all.

That was about my first girlfriend, Mayer told Alex Cooper, a co-host of the Call Her Daddy podcast, on an episode Wednesday . I was 21 when I wrote that song, and I was nostalgic for being 16.

Cooper said she always thought the song, which charted on the Billboard Hot 100 for 29 weeks and peaked at No. 18, was about a specific celebrity. Many fans certainly assumed the same, with some wagering that it was about Mayers ex-girlfriend Jennifer Love Hewitt .

No, thats one of those things where people just sort of formed that idea, Mayer told Cooper about the celebrity theories. It gets reinforced over the years. No, no, no I had never met a celebrity when I wrote that song.