Will we know our relatives and friends in heaven? Is there any sadness in heaven?
The answers are yes and no. The fathers and doctors of the Church and the great saints all assure us that after the primary joy of heaven (the beatific vision), being joined to God in love and perfect happiness for ever, there will be secondary joys and among these will be the reunion with our relatives, friends, and ancestors, with no possibility of ever being separated from them again. There is no unhappiness in heaven. If someone we know is damned to hell, in heaven this tragedy will be seen by the saved in its true perspective, and there will be no sadness over any “separation,” but only rejoicing in the perfect mercy and justice of God. Read the Catechism of the Catholic Church, numbers 1023-1029.