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.
687
Parents receive 1 out of every 5 Valentines.
20
The single biggest predictor of love is proximity.
30
Two in five people in the world marry their first love.
270
40% of people who are rejected in romantic love slip into clinical depression.
72
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
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.
605