Parents receive 1 out of every 5 Valentines.
20
Speed dating was invented by a Rabbi in 1999.
45
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
You burn 26 calories in a one minute kiss.
605
A man's beard grows fastest when he anticipates sex.
239
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
When dragonflies mate, their tails form a love heart.
22