Yes.
When we turn to Christ and repent and confess, and are born again/born from above, then we become new creatures in Christ and Christ's righteousness is credited to our account.
We don't lose it when we sin. It's a permanent transaction, which is why our salvation is secure and we cannot lose it based on works or lack thereof, or sin that we commit and don't confess.
That being said, we are encouraged to confess our sins, as in the Lord’s Prayer, James 5:16, and 1 John 1:9.
Please bear with me, for I am truly trying to understand your position.
Are you saying that we need not be saddened by our sin? That we should not have any regret or remorse over our doing what in not pleasing to God?
Or are you saying that we love God and hate the sin that we do, and because God knows that is what is in our heart, we do not need to outwardly express our remorse to remain right with Him?
Or is it some other thing?