My Heart is Yours

In this world your heart shows who you are. People carry their hearts around everywhere with them. But, when a broken heart can't love, there's only one person who can fix it. The Heartsmith. A man goes to the Heartsmith in desperate need of getting his heart repaired before his wedding. However, what would happen if the Heartsmith were to fall in love with this handsome stranger betrothed to someone else?
(Based off of the graphic novel "Hearts for Sale.")