The romance between Matthew and Mary is pretty much the anchor of the first few seasons of the show, which is why it's so satisfying when they finally make it to the altar early in the third season. Getting there is a bumpy ride, including a previous failed proposal, Mary's lingering guilt over the Kemal Pamuk secret, Matthew's near-death experience in the war, and both Matthew and Mary getting into serious, near-marriage relationships with other people. Fortunately, they're able to overcome it all in time for a romantic snowy proposal in a Christmas episode, followed by a wedding to start the third season. Despite this wonderfully romantic start, the couple only have a short time together before Matthew is killed in a car accident, just hours after Mary gives birth to their son, George.