William, second-in-line to the throne, is a search and rescue helicopter pilot. He will marry long-time girlfriend Kate Middleton on April 29th.
"I did actually mention to him in my letter to him when he got engaged -- because I went through that experience myself -- that it`s quite dangerous to fly a helicopter when you`re in love because you have to concentrate on keeping that machine in the air.
"So I said: `Be careful, concentrate on that helicopter now and think of Catherine later on`," the former king of Greece Constantine told the BBC in an interview.
(U.KR-DLN/H-AK)
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