I think if its going to have a Christmas message there needs to be redemption within the overall theme of the movie therefore there are two possible scenarios these could be as follows:
i. Should they know each other? One character develops throughout the movie (John Wayne) in order to put right past mistakes.
ii) Should they meet for the first time in the movie and the overall ploy of the movie focuses on a love story, there is the danger here of invading 'Quiet Man' territory.