if at the time of the adultery he had no reason to believe the respondent to be a married woman; if the respondent was at the time of the adultery living apart from her husband and leading the life of a prostitute. 23. Alimony pendente lite. In any suit under this Act the wife, whether or not she has obtained a protection order, may apply to the court for alimony pending the suit, and the court may thereupon make such order as it may deem just; except that alimony pending the suit shall in no case exceed one-fifth of the husband’s average net income for the three years next preceding the date of the order, and shall continue in the case of a decree nisi of dissolution or nullity of marriage until the decree is made absolute. 24. Permanent alimony. On a decree absolute declaring a marriage to be dissolved, or on a decree of judicial separation obtained by a wife, the court may order the husband to secure to the wife such sum of money as, having regard to her fortune, if any, to the ability of the husband, and the conduct of the parties, it thinks reasonable. The court may direct the alimony to be paid either in a lump sum or in yearly, monthly or weekly payments for any period not exceeding the life of the wife, and for that purpose may cause a proper instrument to be executed by all necessary parties. The court may direct the alimony to be paid either to the wife herself or to a trustee to be approved on her behalf by the court, and may impose such terms and restrictions, and may direct the execution of such trust deeds as it may think fit, and may from time to time appoint a new trustee. 25. Discharge or alteration of order for alimony. Where an order has been made for the payment of alimony, and the husband from any cause subsequently becomes unable to make the payments, the court may discharge or modify, or suspend the order in whole or in part, and may again revive the order in whole or in part. 26. Settlement of the wife’s property. When a decree of dissolution of marriage or of judicial separation is pronounced on account of adultery by the wife, and the wife is entitled to any property, the court may, notwithstanding the existence of the disability of coverture, order the whole or any part of the property to be settled for the benefit of the husband, or of the children of the marriage, or of both. 27. Power to vary settlements. After a decree absolute of dissolution or of nullity of marriage, the court may inquire into the existence of antenuptial or postnuptial settlements made on the parties whose marriage is the subject of the decree, and may make such orders with reference to the application of the whole or part of the settled property, whether for the benefit of the husband or wife of the children, if any, or of both children and parents, as seems fit; except that no order for the benefit of the parents, or either of them, shall be made at the expense of the children.