nine months...left April 9, 2003 with a brief return of a week in November and then a weekend in December to return, completely moved out of OW's on Jan. 2, 2004.
H has since that time spent some nights with OW, when he's been drinking, as she is an addiction similar to alcohol to my H. But, H is realizing that she didn't make him any happier and just added another layer to his unhappiness.