Two in five people in the world marry their first love.
270
Couples' personalities converge over time to make partners more and more similar.
235
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
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
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
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
29
The single biggest predictor of love is proximity.
30