It's the feast of Saints Cyril and Methodius, so we all celebrate it as usual by celebrating one of the St. Valentines, we don't know for sure which one. (Of course, it's the feast of St. Valentine in Extraordinary Form and the feats of Ss. Cyril and Methodius in Ordinary Form.) Notable Valentine's Day posts (I'll put up others if I find them interesting):
Kelly Wilson makes a Valentine's poem out of all the dedications to Beatrice in A Series of Unfortunate Events.
Ben Kling has a bunch of Valentine cards, including several with notable philosophers. (ht)
Maureen discusses some of the historical and legendary background to the holiday.