It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Historically, sweat has been an active ingredient in perfume and love potions.
309
When dragonflies mate, their tails form a love heart.
22
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
The single biggest predictor of love is proximity.
30
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
