For St. Valentine’s Day. . . .
Did you realize that romantic love, as it blossomed during the Middle Ages, was originally nearly always outside marriage (e.g., Dante and Beatrice) and often adulterous (e.g., Lancelot and Guinivere)?
And did you realize that romantic love was brought into marriage, both as a precursor and as a fruition, by the Reformation?
See C. S. Lewis, The Allegory of Love: A Study in Medieval Tradition (New York: Oxford University Press, 1958), pp. 13-15, , and Justin Taylor, “Martin Luther’s Reform of Marriage,” in Sex and the Supremacy of Christ ed. John Piper and Justin Taylor (Wheaton, IL: Crossway Books, 2005), pp. 239ff.