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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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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Couples' personalities converge over time to make partners more and more similar.
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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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