The YOU'RE BEAUTIFUL singer met the Irish star in a night-club, and as the alcohol flowed, the U2 frontman agreed to collaborate with Blunt.
Blunt enthuses, "Bono is a truly inspirational human being. I've always been inspired by his music."
But when asked whether Bono is as much of a fan of his music, the young pop hunk remains strangely elusive.
He says, "He definitely knows all about it, yes."