'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
The average person will go on a date at least 100 times before they finally marry.
33
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
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.
25
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
40% of people who are rejected in romantic love slip into clinical depression.
72