Couples' personalities converge over time to make partners more and more similar.
235
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Men fall in love faster than women do.
32
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Speed dating was invented by a Rabbi in 1999.
45
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