The genuine relationship between King George and his Queen Charlotte. Truth in Television, as they were pretty much one of the few Happily Married royals in British history.
George (fondly): Mrs. King Charlotte (warmly): Mr. King
Better demonstrated in the garden when George recovers and goes to gather his queen for the trip to Parliament to stave off the Regency bill. All other times, Charlotte bowed and kissed his hand formally as he was more king than husband. This time, when she tries to kneel and kiss his hand he stops her, begs her to stand, and hugs her the way a husband should hug his wife.