A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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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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One in five long-term love relationships began with one or both partners being involved with others.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Two in five people in the world marry their first love.
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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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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