look at the history of prince charles and lady diana, two couples heading down the same path, but for william, a draw mattive move to make sure the same mistakes weren't made. according to biographer christopher anderson, everything came to a head on valentine's day 2007. >> she thought she would be getting that proposal. instead, he gave her a van cleve and ar pells' familiar mel compact. they started to quarrel bitterly. she really demanded that he commit, as they say. and william wasn't ready for it. he went to his father, prince charles. prince charles said you can't keep stringing this girl along. if you're not ready to ask her to marry you, break it off. unfortunately he listened to his father's advice. >> a father perhaps trying to prevent history from repeating itself. >> charles would have been perfectly happy staying a bachelor indefinitely.