True repentence completely absolves the sinner from any culpability before the Lord for the sins committed.
True repentence brings relief from the suffering and feeling of unworthiness associated with wrong doing.
The process of repentance requires both confession and a forsaking of the sin. Those actions, fully complied with, result in forgiveness of the person by the Lord.
One of the most difficult problems many people have in returning to the Lord after a period of disobedience in the Mormon Church is putting the past behind them.