Valentine's Day: How the heart shape came to symbolize love.

The origin of the heart symbol might have something to do with a North African plant.

How the Heart Shape Got Its Name and Why it Looks Nothing Like the

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The History of the Heart Shape

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Valentine's Day And The Symbolism Of Love – Symbol of Love

The Symbol of Love Biology Article for Students

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How did the Heart Become the Symbol of Love anyway?

Origins & Meanings of Valentine's Day Symbols