Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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Men fall in love faster than women do.
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Parents receive 1 out of every 5 Valentines.
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The average person will go on a date at least 100 times before they finally marry.
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