Adele’s first single, “Easy On Me”, from her latest album “30”, has her explaining to her son and former husband why she chose to walk away from her short marriage: “I changed who I was to put you both first, but now I give up”.

The average length of a marriage has been between 9 and 12 years, and that hasn’t changed much during the last 50 years. There are no data yet for same-sex marriages.