Of course, as with most inconclusive situations lacking hard data facts, there is more than one possible explanation behind the use of the Valentine heart.   The reasoning dates back to seventh century B.C.  when the city-state of Cyrene had a lucrative trade with the silphium plant, which had a seedpod resembling the heart shape and was used as an herbal contraceptive.  The use of the heart once again resurfaced in the 13^th century in depictions of devoted lovers bequeathing their eternal devotion with a heart shaped token.  The Catholic Church contends that it was a vision

Regardless of the true inception of the Valentine heart and whether or not you acknowledge this day of love, we extend our version of the Valentine heart to you.  And, let it go down in history as a fact, that Saratech was one of the first to contrive a FEMAP meshed version of a Valentine heart!by Saint Margaret Mary Alocoque in the 17^thcentury, of a heart surrounded by thorns, as the reasoning behind the modern heart shape.  And, it was the Victorians, in 17^th-century England, that solidified the Valentine tradition in exchanging elaborately decorated hearts as a symbol of love.