Original sentence: It simply means some couples enjoy open marriages and also maintain high levels of marital satisfaction and stability.Some couples in open marriages report high levels of satisfaction with their relationships.Some studies show that couples in open marriages can maintain satisfying relationships.These couples are able to enjoy  open marriage while maintaining satisfying and stable relationships with one another
Edited sentence: Couples in open marriages often report high levels of satisfaction with their relationships.It simply means couples can enjoy open marriages while maintaining high levels of marital satisfaction and stability.Studies consistently show that couples in open marriages can maintain satisfying relationships.These couples are able to enjoy the gratifications of open marriage while maintaining satisfying and stable relationships with one another