"I would not exchange Katie for France or for Venice, because God has given her to me and other women have worse faults." Martin Luther grew in his resolve to take Katie as his wife. His friends were shocked by his proposal, with comments such as, "For heaven's sake, not this one." It was predicted that "the world and the Devil would laugh and Luther's work would be undone."
Three days later, Luther made a public announcement of his betrothal to Katie. At this point it seems that Luther began to get a bit more excited about his upcoming wedding. He sent out letters of invitation, telling Spalatin, "You must come to my wedding. I have made the angels laugh and the devils weep." To a gentleman who helped arrange the escape of the nuns, "I am going to get married. God likes to work miracles and to make a fool of the world. You must come to the wedding."
On June 27th, 1525 at 10:00 AM Luther escorted his beaming wife to be, Katherine Von Bora, to the parish church in Wittenberg. The bells rang out the good news through the streets. The religious ceremony was performed. Afterward a banquet in the Augustinian cloister followed by a dance at the town hall. That evening another banquet occured. All took their leave at 11:00 PM. Isn't that a fun wedding day?
So, an ex -priest married an ex- nun. Luther was socially past marrying age, Katie on the furthest edge (late 20's). They weren't particularly 'in love' as we would say. They both however felt called to the marriage, took joy in the marriage, and had what appears to be a very good time.