When Prince Harry got down on one knee and asked Meghan Markle to be his royal wife, he knew he had a lot to teach her.
Becoming his wife also meant becoming the Duchess of Sussex and marrying into one of the most famous families in the world.
In the lead up to their wedding and in the early months of their marriage, he stood at her side to guide her through official engagements, charity outings and private meetings with the Queen and the rest of The Firm.