Maybe it was my droopy eyelids. Maybe it was because I was about to turn the same age my mother was when I lost her. Maybe it was because after almost twenty years of marriage my husband and I seemed to be running out of things to say to each other.But when the anonymous online study called 'Marriage in the 21st Century' showed up in my inbox, I had no idea how profoundly it would change my life. It wasn't long before I was assigned both a pseudonym (Wife 22) and a caseworker (Researcher 101).And, just like ...