St Valentine's Day, celebrated on February 14, has roots in several different legends that have found their way to us through the ages. St Valentine is considered the patron of lovers. The feast day became a lovers' festival in the 14th century, probably as an extension of pagan love festivals and fertility rites celebrated in mid-February. Whatever the odd mixture of origins, St Valentine's Day is now a day for sweethearts. It is the day that you show your friend or loved one that you care.