If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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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When dragonflies mate, their tails form a love heart.
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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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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.
27
The single biggest predictor of love is proximity.
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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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