When dragonflies mate, their tails form a love heart.
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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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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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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Men who kiss their wives in the morning live five years longer than those who don't.
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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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Couples' personalities converge over time to make partners more and more similar.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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