'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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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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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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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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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
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You burn 26 calories in a one minute kiss.
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