Karen Behrendt is the co - author of ` ` He 's Just Not That Into You , '' now a writer . Behrendt leads a mostly female writing team on ` ` Sex and the City '' `` You often hear women say , ' I do n't know if he 's ready to get married . ' ` ` He 's Just Not That Into You '' is a book for women who worry about relationships . ` ` We were born to pursue relationships , '' Behrendt says .
Karen Behrendt is the co - author of ` ` He 's Just Not That Into You , '' now a writer . Behrendt leads a mostly female writing team on ` ` Sex and the City '' ` ` He 's Just Not That Into You '' is a book for women who worry about relationships . ` ` We were born to pursue relationships , '' Behrendt says .