Historically, sweat has been an active ingredient in perfume and love potions.
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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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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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