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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In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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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The single biggest predictor of love is proximity.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
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