In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Two in five people in the world marry their first love.
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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Wearing red increases attraction.
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