When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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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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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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The single biggest predictor of love is proximity.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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