Couples' personalities converge over time to make partners more and more similar.
235
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
29
You burn 26 calories in a one minute kiss.
605
Men fall in love faster than women do.
32
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
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
27