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
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69