Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Two in five people in the world marry their first love.
270
Raj from the Big Bang Theory is married to Miss India.
11