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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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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The single biggest predictor of love is proximity.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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The average person will go on a date at least 100 times before they finally marry.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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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 Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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