In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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Raj from the Big Bang Theory is married to Miss India.
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When dragonflies mate, their tails form a love heart.
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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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Couples' personalities converge over time to make partners more and more similar.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
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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