Two in five people in the world marry their first love.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
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
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
Kissing an infection-free partner is good for your teeth!
141