People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Couples' personalities converge over time to make partners more and more similar.
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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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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