Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Parents receive 1 out of every 5 Valentines.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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