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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Raj from the Big Bang Theory is married to Miss India.
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Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
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The average person will go on a date at least 100 times before they finally marry.
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Couples' personalities converge over time to make partners more and more similar.
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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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