Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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Historically, sweat has been an active ingredient in perfume and love potions.
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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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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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