In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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A man's beard grows fastest when he anticipates sex.
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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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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Wearing red increases attraction.
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