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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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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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