How did heart come to refer to the shape?

ELI5: Where did the stereotypical heart shape come from, considering it doesn't look like an actual heart? : r/explainlikeimfive

heart clipart - Clip Art Library

Heart Shapes Clip Art Bundle {Educlips Clipart} - Clip Art Library

Good Quality Pink Tourmaline Heart Shape Briolette at Best Price

Tina Guo - Did you know? The ❤️ symbol we use today came from the idea of two human hearts being fused together as one forming the heart-shaped symbol we recognize today

Basic Heart Shape - ClipArt Best

Heart Shape PNG, Vector, PSD, and Clipart With Transparent - Clip Art Library

küçük kalp çizimi: Yandex Görsel'de 2 bin görsel bulundu

Swan Hearts, High Point, NC

Origin of Everything, Why Does the ❤️ Heart Symbol ❤️ Look That Way?, Season 1, Episode 21

Heart: Anatomy & Function

heart shape font - Clip Art Library