Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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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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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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 Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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