'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
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
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
One in five long-term love relationships began with one or both partners being involved with others.
177
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
A man's beard grows fastest when he anticipates sex.
239
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
-2