Gravitation is not responsible for people falling in love.
~Albert Einstein
Historians claim that the first valentine was a poem sent in 1415 by Charles, Duke of Orleans, to his wife. He was imprisoned in the Tower of London at the time. In the United States, Miss Esther Howland is given credit for sending the first valentine's cards. Commercial valentines were introduced in the 1800's and now the date is very commercialized. The town of Loveland, Colorado, does a large post office business around February 14.