Kissing an infection-free partner is good for your teeth!
141
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Men fall in love faster than women do.
32
Parents receive 1 out of every 5 Valentines.
20
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
When dragonflies mate, their tails form a love heart.
22