Whether it’s a chocolate in heart shaped box, an emoji with hearts for eyes, iconic design such as I ️ NY or even liking an image on Instagram, the heart symbol is about as ubiquitous as it comes.

The 13th-century French manuscript "Romance of the Pear" contains an early depiction of the heart as a symbol of love. Allegorical image from the Roman de la poire. Image courtesy of Bibliothèque ...