It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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40% of people who are rejected in romantic love slip into clinical depression.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Historically, sweat has been an active ingredient in perfume and love potions.
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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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Women rate men more attractive if other women are looking and smiling at him.
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