Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Couples' personalities converge over time to make partners more and more similar.
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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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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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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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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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