In the case of an engaged couple who have decided not to marry: if the man feels that he is not acting properly toward the young woman and if his passions are too strong and he feels that they ought to marry, then they should get married, as he wants to. There is no sin in this.
In the same way you husbands must live with your wives with the proper understanding that they are more delicate than you. Treat them with respect, because they also will receive, together with you, God's gift of life. Do this so that nothing will interfere with your prayers.