When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Parents receive 1 out of every 5 Valentines.
20
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Kissing an infection-free partner is good for your teeth!
141
In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
28