Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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In 2010, Gary Richmond was beaten into a coma. He woke up with amnesia and no memory of his wife of 20 years. Subsequently, he ended up falling in love with her all over again!
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Two in five people in the world marry their first love.
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A man's beard grows fastest when he anticipates sex.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Men who kiss their wives in the morning live five years longer than those who don't.
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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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One in five long-term love relationships began with one or both partners being involved with others.
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