Speed dating was invented by a Rabbi in 1999.
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40% of people who are rejected in romantic love slip into clinical depression.
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When dragonflies mate, their tails form a love heart.
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Wearing red increases attraction.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Parents receive 1 out of every 5 Valentines.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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