In the ancient Rome period, the February 14th was a festival for the respect of Johanna.
Yuena is Rome empress, while the Romans worshiped her as the God of women and marriage. The next February 15th is called "Lupasala" is used to express respect for other gods of the festival approximately elegantly governs. In ancient Rome, the lives of young and young girls were strictly separated. However, in Lupasala Festival, a young man who can choose their favorite girl's name carved on the vase. In this way, at the festival, the young man can dance with the girl of his choice and celebrate the festival.
If the selected girls are also interested in the young men, they can be paired all the time, and eventually they will fall in love and go into the church to marry. For this, the year's February 14th is designated as Valentine's day for this purpose.