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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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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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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Parents receive 1 out of every 5 Valentines.
20
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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