Historically, sweat has been an active ingredient in perfume and love potions.
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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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'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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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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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 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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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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