There is a difference between forgiveness and acceptance. You may accept many things about your spouse that you do not particularly like. In fact, such acceptance is necessary in healthy marriages. But forgiveness presupposes that you have been wronged, treated unfairly. In the Bible, such action is called sin and sin cannot be accepted. There are two responses to sin; we can confess our wrongdoing and seek forgiveness or we can continue in our sin. The one who continues in sin will not be forgiven. In fact, God will bring discipline to the Christian who continues in sin. His desire is that we turn from our sin so that we can experience His forgiveness, and have warm fellowship again. In a healthy marriage, this will also be our desire.