The single biggest predictor of love is proximity.
30
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
You burn 26 calories in a one minute kiss.
605
One in five long-term love relationships began with one or both partners being involved with others.
177
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
Historically, sweat has been an active ingredient in perfume and love potions.
309
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