February 14th is a day when close friends or loved ones send each other gifts to express their friendship or love. St Valentine's Day is believed to come from both Christian and Ancient Roman traditions - the Catholic church recognizes three different saints named Valentine or Valentinus. One legend says that a man named Valentine fell in love with a young girl who visited him when he was in prison. Before his death, it is thought that he wrote her a letter, which he signed "from your Valentine", an expression still in use today.