Valentines's Day has evolved from animal sacrifices to flowers

History Of Valentine's Day: What You May Not Know About

Valentine's Day celebrates love but has a darker history, Blue Mountains Gazette

The History Behind Why Valentine's Day Is Celebrated

Valentine's Day: Origin and Meaning - AC Silver

The History of Valentines Day

ALL FOR LOVE: A History of Valentines Day - Style Clinic

Unveiling the Hidden Truths of Valentine's Day: Discover the Origins, Meaning and Who Invented the Holiday of Love

Cupids, Hearts, Roses, and Chocolates: The Fascinating History Behind Iconic Valentine's Day Symbols

Valentine's Day has dark origins. Here's how it started : NPR

Why we embrace the ritual of Valentine's Day: Q&A with a Yale sociologist