The sins of others always bring pain and grief to the heart of God. The Holy Spirit is able to give us this kind of love for others. He produced it fully in the life of Jesus. Love always protects. Or as another has translated it -'Love is always slow to expose.
Love always trusts.
It has an unquenchable faith. It is always eager to believe the best. It is not suspicious. The Lord Jesus was always calling forth from others their best. Love always hopes.