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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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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40% of people who are rejected in romantic love slip into clinical depression.
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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