The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Historically, sweat has been an active ingredient in perfume and love potions.
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Kissing an infection-free partner is good for your teeth!
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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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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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Wearing red increases attraction.
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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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