Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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
Raj from the Big Bang Theory is married to Miss India.
11
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Two in five people in the world marry their first love.
270
The single biggest predictor of love is proximity.
30