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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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You burn 26 calories in a one minute kiss.
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The average person will go on a date at least 100 times before they finally marry.
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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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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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