Parents receive 1 out of every 5 Valentines.
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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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The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Wearing red increases attraction.
30
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
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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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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