The Giver tells Jonas something about his personal family life in Chapter 13.
What he tells Jonas is about the kind of issues that Jonas will face when he is the Receiver. He tells Jonas that he will not be able to share his work with his spouse. He will not be able to tell her anything about what happens in his days. He will also not be able to tell her about the books. This is hard, he says.
He tells Jonas that he did have a spouse, but she now lives with the Childless Adults.