As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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40% of people who are rejected in romantic love slip into clinical depression.
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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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One in five long-term love relationships began with one or both partners being involved with others.
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