Randy Alcorn, author of the recommended Heaven, speaks to this question:
Will we desire relationships in Heaven with anyone except God?
Genesis 2:18: The Lord God said, "It is not good for the man to be alone. I will make a helper who is just right for him."1 Thessalonians 2:17: Dear brothers and sisters, after we were separated from you for a little while (though our hearts never left you), we tried very hard to come back because of our intense longing to see you again.
God has designed us for relationship not only with himself but also with others of our kind. God planned for Adam, and all mankind, to need human companionship. In other words, God made people to need and desire others besides himself. Think of it—God was with Adam in the Garden, yet God said that wasn’t good enough. God designed us to need each other. What we gain from each other is more of God because we’re created in his image and are a conduit for his self-revelation. . . .
Read the whole thing here.