The single biggest predictor of love is proximity.
30
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Parents receive 1 out of every 5 Valentines.
20
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
Speed dating was invented by a Rabbi in 1999.
45
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
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