In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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Historically, sweat has been an active ingredient in perfume and love potions.
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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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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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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