Men who kiss their wives in the morning live five years longer than those who don't.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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A man's beard grows fastest when he anticipates sex.
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The average person will go on a date at least 100 times before they finally marry.
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Speed dating was invented by a Rabbi in 1999.
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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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