In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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One in five long-term love relationships began with one or both partners being involved with others.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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When dragonflies mate, their tails form a love heart.
22
Men who kiss their wives in the morning live five years longer than those who don't.
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The single biggest predictor of love is proximity.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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