Do the dead come back to us who are living?

If I understand your question correctly you wish to know if the dead have a continuing relationship with those who are still alive.

The Bible teaches us that if your wife dies, your marriage is over, and you are free to remarry. That relationship is ended yes, but if she was a follower of Jesus, you will meet her again, since you have asked Jesus to be your Savior, when you go to be with Jesus. However you will not be husband and wife, just fellow believers who will be worshiping Jesus with all the millions of others who are in Heaven.

The dead do not communicate with the living, for Jesus explained to the rich man that those who are in Paradise may not return to speak to the living. Jesus told the people that they have Moses and the Prophets, that is the Bible to tell them how to be saved. Luke 16:27-31

Will you know your father, mother, brothers and sisters in Heaven, probably yes, but you will not see them again until you get to heaven yourself, not while you are living, and they are dead.

2 Samuel 12:22-23 "And he said, While the child was yet alive, I fasted and wept: for I said, 'Who knoweth whether Jehovah will not be gracious to me, that the child may live?' But now he is dead, wherefore should I fast? can I bring him back again? I shall go to him, but he will not return to me".