If you make a mistake by doing or saying something that is hurtful or damaging to the relationship, say that you are sorry. Many people struggle with these words, even when they know that what they did was wrong. It actually takes a strong person to apologize. Do not wait until you think you have the courage but say it immediately, and with sincerity. Too often when couples argue, there is a long period of silence, which actually makes the anger and tension worse. You need to let your mate know immediately that you made a mistake and ask for forgiveness.