Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Two in five people in the world marry their first love.
270
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Historically, sweat has been an active ingredient in perfume and love potions.
309
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Raj from the Big Bang Theory is married to Miss India.
11