In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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You burn 26 calories in a one minute kiss.
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When dragonflies mate, their tails form a love heart.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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Raj from the Big Bang Theory is married to Miss India.
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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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