Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
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Parents receive 1 out of every 5 Valentines.
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Couples' personalities converge over time to make partners more and more similar.
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When dragonflies mate, their tails form a love heart.
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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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