4: The number of serious girlfriends he's had. There was Laura Gerard-Leigh in 2003, Chelsy Davy from 2004 to 2011, Cressida Bonas from 2012 to 2014, and, of course, his now-wife Meghan Markle, who he began dating in 2016.
2: The number of exes that attended his wedding. Both Cressida Bonas and Chelsy Davy attended the nuptials.
12: The age he was when he was photographed driving a car on the Balmoral estate.
20: The number of weeks he served in Afghanistan as an Apache pilot in 2012 to 2013.