In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
40
40% of people who are rejected in romantic love slip into clinical depression.
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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Historically, sweat has been an active ingredient in perfume and love potions.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13