Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
You burn 26 calories in a one minute kiss.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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Couples' personalities converge over time to make partners more and more similar.
235
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
737
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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