Conflict in relationships is inevitable. Whenever you put two people together there are going to be times they disagree. Marriage is no different. Marriage without some degree of conflict at times is virtually non-existent. So it is not a matter of if...it is a matter of when.
When conflict arises, we need to have a mature, productive way (and most of all a Biblical way) of handling it. Carrying grudges and holding on to anger is not only unproductive and hurtful, but it can hold God’s hand back from blessing us or even hearing our prayers for forgiveness ourselves.
“And whenever you stand praying, if you have anything against anyone, forgive him, that your Father in heaven may also forgive you your trespasses.” Mark 11:25 (NKJV)