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
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
One in five long-term love relationships began with one or both partners being involved with others.
177
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
A man's beard grows fastest when he anticipates sex.
239
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
-2
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38