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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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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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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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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