When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Speed dating was invented by a Rabbi in 1999.
45
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
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
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