The single biggest predictor of love is proximity.
30
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Parents receive 1 out of every 5 Valentines.
20
Speed dating was invented by a Rabbi in 1999.
45
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
41