There is hope for marriage. Genesis 3:15 provides hope to man to be redeemed from sin. It is a perfect plan created by God. There is also a perfect plan for marriage given by God. Marriage, as originally designed, is worth having and keeping.
We must not allow Satan to destroy our marriage or to make it less than God designed it to be. To prevent him, you need to be one with God so you can be one with your mate. Let God create you and your marriage into a reflection of His image.