Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
The single biggest predictor of love is proximity.
30
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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