In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Speed dating was invented by a Rabbi in 1999.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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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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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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