When dragonflies mate, their tails form a love heart.
22
Two in five people in the world marry their first love.
270
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
The single biggest predictor of love is proximity.
30
Sea otters hold hands while sleeping so they don’t drift away from each other.
104