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
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
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
40% of people who are rejected in romantic love slip into clinical depression.
72