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 who kiss their wives in the morning live five years longer than those who don't.
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Kissing an infection-free partner is good for your teeth!
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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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Raj from the Big Bang Theory is married to Miss India.
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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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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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