He probably did think the song was about him, and correctly so

Carly Simon has surprised nobody by confirming that, in part, You're So Vain is about Warren Beatty:

The singer, 70, tells PEOPLE that the second verse of her famous song refers to none other than Warren Beatty.

"I have confirmed that the second verse is Warren," she tells PEOPLE in an interview pegged to her much-anticipated memoir, Boys in the Trees, to be released later this month.

Nobody surprised, perhaps, apart from the poor sap who paid a fortune in an auction to be told the secret of the song. He might want a refund now.