There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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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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'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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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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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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