We are all sinners and yet Christ died for us. The love of the Father towards us was revealed in that He sent His Son to bear our sins. We should think of this as we love our brothers and sisters in Christ, letting love cover a multitude of sins.
We have taught this often in this church. If your brother sins and you can simply overlook his faults and love him anyway, then you should do so. But if he sins against you and you cannot simply overlook the sin, then the Bible requires that you go to him, confront him so that he repents and then forgive him.
But you do not get to harbor bitterness against him for the sin that he has committed. You must simply overlook it and take no offense, at all, or you must confront him so that the sin can be confessed and forgiven. To the extent that you are bitter or angry at your brother, sister, mother, father, husband, wife or friend, you must now simply drop it altogether and leave no bitterness at all against them, OR you must now commit to confronting them with their sin for the express purpose of granting them full forgiveness. But the Lord does not allow you to hold onto the wrongs committed against you. Let that sink in. The Lord does not allow you to hold on to the wrongs committed against you. You may not be fully able to deal with this right now in this moment but you do need to take care of it today.