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
Couples' personalities converge over time to make partners more and more similar.
235
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The average person will go on a date at least 100 times before they finally marry.
33
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
27
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
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