Originally the word Valentine meant the person whose name was picked from a box to be chosen as your sweetheart up until the 1500's. Then around 1533, it meant the folded piece of paper with the sweetheart's name on it. By 1610 it then became the gift given to this special someone and by 1824 it then became a poem, letter or verse to a sweetheart.
Another early variation of Lupercalia sounds like a pilot for a reality TV show with the Kardashians. Two Roman youths (who were blessed by their priest) would run through the streets swinging a goatskin thong called a Februa, the Latin word is Februatio (the act of lashing with sacred thongs), and was believed to be for purification. From this word comes our word "February". And the belief is that if a woman was touched by this thong, she would be able to bear children better. According to the legend, they did this to honor their God Faunus, the god of crops.