St. Valentine was a real guy. He was definitely involved in the bringing together of young couples in love. He married them, and was beheaded for his faith, AND for joining couples together against the Emperor's wish. The emperor wanted SINGLE soldiers. He did have a friendship with a young blind girl and exchanged letters with her. His last letter was signed to her...."Your Valentine".
A Loving Letter Inspires Valentine’s Day MessagesBefore he was killed, Valentine wrote a last note to encourage Julia to stay close to Jesus and to thank her for being his friend. He signed the note: “From your Valentine.” That note inspired people to begin writing their own loving messages to people on Valentine’s Feast Day -- February 14th -- which is celebrated on the same day on which Valentine was martyred.
Valentine was beaten, stoned, and beheaded on February 14, 270. People who remembered his loving service to many young couples began celebrating his life, and he came to be regarded as a saint through whom God had worked to help people in miraculous ways. (from about.com)