Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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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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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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The single biggest predictor of love is proximity.
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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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