'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.
255
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
16
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103