Sea otters hold hands while sleeping so they don’t drift away from each other.
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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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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One in five long-term love relationships began with one or both partners being involved with others.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Parents receive 1 out of every 5 Valentines.
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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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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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