We are to always have forgiveness in our heart, ready and willing to forgive when the time is right to reconcile a relationship. That is really the purpose of repenting and forgiving, to wipe away the offense to restore a broken relationship.
We are not restored to God without confession of our sin, for the purpose of being cleansed of it.
Without repentance, there is no desire to change what is filthy and destructive. It is the confession that is an indicator of our sadness that we offended God and others, it is confession that shows a desire to change what is wrong or evil in our hearts.
1 John 1:9 - If we confess our sins, he is faithful and just to forgive us [our] sins, and to cleanse us from all unrighteousness.
James 5:16 - Confess [your] faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.
Matthew 10:33 - But whosoever shall deny me before men, him will I also deny before my Father which is in heaven.
Proverbs 28:13 - He that covereth his sins shall not prosper: but whoso confesseth and forsaketh [them] shall have mercy.