Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Historically, sweat has been an active ingredient in perfume and love potions.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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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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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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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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Speed dating was invented by a Rabbi in 1999.
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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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