When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
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
Speed dating was invented by a Rabbi in 1999.
45
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 Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
The left ear is more responsive to words of love and emotion whispered into it than the right.
44
Historically, sweat has been an active ingredient in perfume and love potions.
309