The other Valentine, a bishop from the town of Terni in Italy, was martyred a few years later in the same persecution. And that's all anyone seems to know about him. The two Valentines were assigned this day until fairly recently when the Roman Catholic Church did some housecleaning in its calendar. The other has been reduced to the rank of a pious legend. It's a curious holiday.
Some people love it.
Some hate it. Some just ignore it. The most elaborate celebration of the day I see each year takes place downstairs here in the nursery school where each child is carefully coached and regulated to give a valentine card to every other child in the class. That's actually one of the oldest traditions around the day. Older even, that the patronage of Valentine himself.