How did the human heart become associated with love? And how did it turn into the shape we know today?

We see the familiar symbol everywhere -- in text messages, signs, cakes, clothing, and more. But we also know the real heart looks nothing like it. Historian Marilyn Yalom tells us how the anatomical organ became the symbol that we all know today.

Why doesn't the heart shape look like an actual heart? - Big Think

How did the human heart become associated with love? And how did it turn into the shape we know today?

Kathleen Flanagan Rollins's Blog

The Mysterious Origins of the Enduring Heart Symbol - WSJ

How and when did heart shape was used as a symbol of love ? - Quora

How did the Heart Become the Symbol of Love anyway?

How did the human heart become associated with love? And how did it turn into the shape we know today?

Why is a heart considered the symbol of love and affection? - Quora

Berlin, Staatsbibliothek MS Germ. Oct. 489

The History of the Heart Shape