Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
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").
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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
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
The average person will go on a date at least 100 times before they finally marry.
33
Couples' personalities converge over time to make partners more and more similar.
235