The 'Thinking Out Loud' hitmaker has revealed the British royal advised him to never duet with soccer star Wayne Rooney again after seeing a YouTube video of them singing Ed's hit single 'Lego House'.
Explaining that the conversation took place at the Royal Variety Performance earlier this month, Ed said William joked: ''Er, no more duets with Wayne Rooney.''
The 23-year-old star also spoke about how he came to record the performance with his unlikely singing partner - who plays soccer for Manchester United.
He told the Daily Mirror newspaper: ''Rooney's been trying to come to a gig for three years.
''He actually booked me for his birthday party, but I had a gig the same night.
''Coleen [Rooney, his wife] came down to my Leeds show and said Wayne was going to come down to Manchester with a load of mates.
''She asked if I wanted to go out afterwards. I said I didn't want to go to a club, but Wayne hates clubs as well, so they rented out a lovely dingy pub that just did Jagerbombs and beer.''
Meanwhile, the flame-haired singer confessed he's unsure whether William and his wife, Duchess Catherine like his music as much as they claim to.
He added: ''I don't know if they're fans. Do royals have iPods and things like that?''
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