This week, a woman at my church faces the harrowing decision between two Christmases. On the one hand, she could join a few friends and the son from which she has been estranged, risking the possibility of running into the guy who things “didn’t work out with.” It would be too uncomfortable for her to ask the hostess whether this man has RSVP-ed one way or the other. On the other hand, she could join the just-this-month widowed...