When Prince William and Catherine Middleton married on April 29, 2011, within the ancient walls of London’s Westminster Abbey, it had been nearly a full decade since they first met in the fall of 2001. Amid the constant “Waity Katie” media headlines of the 2000s, the pair took their time before tying the knot, and the next monarch reportedly felt it was for a good reason. “Once William told me the reason he and Kate took their time getting engaged was because he wanted to make sure his marriage would last forever,” veteran royal photographer Arthur Edwards wrote. The Prince and Princess of Wal…