Do I correctly suspect they have polyamory in heaven?
ISTR that someone asked Jesus what happens if a widow gets married again, after everyone dies and is resurrected -- which husband does she get back with? I can't remember the answer, though.
He ducked the question, I think, in simply saying that non-marriage was superior and/or in heaven no one is married maybe: Luke 20:27-38:
...Some of the Sadducees, who say there is no resurrection, came to Jesus with a question. "Teacher," they said, "Moses wrote for us that if a man's brother dies and leaves a wife but no children, the man must marry the widow and have children for his brother. Now there were seven brothers. The first one married a woman and died childless. The second and then the third married her, and in the same way the se