Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
The left ear is more responsive to words of love and emotion whispered into it than the right.
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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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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Speed dating was invented by a Rabbi in 1999.
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One in five long-term love relationships began with one or both partners being involved with others.
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