What Is the Origin of the Heart Symbol?

History offers various explanations from an ancient species of giant fennel to anatomical drawings in ancient medieval texts.
While Valentine's Day is shared by lovers sharing time together, one of the first Valentine cards was sent from an enemy prison.

BBC Arts - BBC Arts - Matters of the heart: Where does the

4 Facts to Know about the Heart – Healing Arts Health and Wellness

Origin of Everything Why Does the ❤️ Heart Symbol ❤️ Look

Hearts & Roses Valentine's Day Party Pack

A History of the Heart Symbol — ThreadWritten Textiles

The History of Heart-Shaped Jewelry

The History of the Heart Shape

4 Facts to Know about the Heart – Healing Arts Health and Wellness

10 Theories on the Origins of the Valentine's Heart - Listverse

The Mysterious Origins of the Enduring Heart Symbol - WSJ