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
Historically, sweat has been an active ingredient in perfume and love potions.
309
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Two in five people in the world marry their first love.
270
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
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
Speed dating was invented by a Rabbi in 1999.
45