“You might be tempted to conclude: “Well, how about we live together, instead of getting married? We will try each other out. It is the sensible thing to do.” But what exactly does it mean, when you invite someone to live with you, instead of committing yourself to each other? And let us be appropriately harsh and realistic about our appraisal, instead of pretending we are taking a used car for a test jaunt. Here is what it means: “You will do, for now, and I presume you feel the same way about me. Otherwise we would just get married. But in the name of a common sense that neither of us possesses, we are going to reserve the right to swap each other out for a better option at any point.” And if you do not think that is what living together means—as a fully articulated ethical statement—see if you can formulate something more plausible. You might think, “Look, Doc, that is pretty cynical.” So why not we consider the stats, instead of the opinion of arguably but not truly old-fashioned me? The breakup rate among people who are not married but are living together—so, married in everything but the formal sense—is substantially higher than the divorce rate among married couples. And even if you do get married and make an honest person, so to speak, of the individual with whom you cohabited, you are still much more rather than less likely to get divorced than you would be had you never lived together initially. So the idea of trying each other out? Sounds enticing, but does not work.”