Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
The left ear is more responsive to words of love and emotion whispered into it than the right.
44
Couples' personalities converge over time to make partners more and more similar.
235
Raj from the Big Bang Theory is married to Miss India.
11
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
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
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4