As Jews, we may not be sure whether it's proper for us to join the party. After all, for the longest time the full name of this holiday was “St. Valentine's Day” because of its legendary link with the apocryphal story of one of the earliest Christian saints. Yet academics aren't the only ones who have recognized the dubious historical basis of this connection. Vatican II, the landmark set of reforms adopted by the Catholic Church in 1969, removed Valentine's Day from the Catholic church's calendar, asserting that "though the memorial of St. Valentine is ancient… apart from his name nothing is known… except that he was buried on the Via Flaminia on 14 February."
What's left for this day, as proponents of its universal celebration declare, is something that people of all faiths may in good conscience observe: A day in which to acknowledge the power of love to make us fully human.
When I am asked as a rabbi if I think it's a good idea for Jews to celebrate Valentine's Day, my standard answer is, "Yes, we should celebrate love… every day of the year."