One in five long-term love relationships began with one or both partners being involved with others.
177
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
-2
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Parents receive 1 out of every 5 Valentines.
20
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
When dragonflies mate, their tails form a love heart.
22
Speed dating was invented by a Rabbi in 1999.
45