The typical person spends about 600 hours having sex between the ages of 20 and 70.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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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