According to legend, in order to "remind them of God's love and to encourage them to remain faithful Christians," Saint Valentine is said to have cut hearts from parchment, giving them to the soldiers and the persecuted Christians, a possible origin of the widespread use of hearts on Saint Valentine's Day.
There is an additional embellishment to The Golden Legend, On the evening before Valentine was to be executed, he would have written the first "valentine" card himself, addressed to the daughter of his jailer Asterius, who was no longer blind, signing as "Your Valentine."John Foxe, an English historian, as well as the Order of Carmelites, state that Saint Valentine was buried in the Church of Praxedes in Rome.
People are expected to send cards to their sweethearts. That being said, little kids send them to everyone in their class these days. Its everything but romantic. Nothing like the original intent.Hallmark strikes again.
Chocolates are a traditional gift and flowers. Now of course all kinds of cheap knick knacks are produced and given, anything to make money. I suppose a nice bouquet of flowers and a box of chocolates given with meaning is a nice gesture.