You burn 26 calories in a one minute kiss.
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Two in five people in the world marry their first love.
270
Parents receive 1 out of every 5 Valentines.
20
A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
29
For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
41
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103