Ooooh! This is a lovely treat of a book. Every time Lauren sends her husband into the loft, a different man comes down. Her past is rewritten and she has now been married to Dave/Gary/Bob/Whoever for a year, a month, a decade, a minute. This isn't like how Groundhog Day became On The Calculation of Volume or Sliding Doors became The Names, instead this is a new and twisty concept rendered…