In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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Men fall in love faster than women do.
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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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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Kissing an infection-free partner is good for your teeth!
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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