The 'Candy' singer was so keen to impress her, who had never heard of him, and played her footage from his mammoth 2003 Knebworth concerts, which attracted 375,000 fans over three nights at the iconic open air concert location in Hertfordshire, reported Showbiz spy.
"I've watched like the first three numbers of Knebworth when I was trying to impress an American girl that had never heard of me in the States. 'Check this out, what do you think of that?," he said.
Williams, 38, who has a baby daughter, Theodora 'Teddy' Rose, with wife wife Ayda Field, also said he has a phobia of mobile phones and wishes everyone used fax machines instead like musician Morrissey did in a documentary he once watched.