Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
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
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
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.
28
Historically, sweat has been an active ingredient in perfume and love potions.
309
Men fall in love faster than women do.
32
One in five long-term love relationships began with one or both partners being involved with others.
177
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10