Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Historically, sweat has been an active ingredient in perfume and love potions.
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A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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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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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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40% of people who are rejected in romantic love slip into clinical depression.
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