SPOILERS AHEAD FOR INTO THE WOODS, HADESTOWN, AND GOOD OMENS
The Narrator in Into the Woods tries desperately to tell the story and get everyone their happy ending, but it fails, over and over again as the characters in the story kill the Narrator each performance. The characters want to tell their own story because they don't like the way the Narrator tells it. So they kill the Narrator. Again and again and again.
And yet, the next show, the Narrator starts again, telling the story, trying to get everyone to their happy ending. But the characters don't let it happen. They want happiness and freedom, from curses, from fate, from the Narrator. So the Narrator dies. And starts again.
Just like in Hadestown. Orpheus and Eurydice desperately want to escape the underworld, and their fate, together. And each performance, Hermes tells their story, helping them on their way, trying to get them their happy ending. But it never works. It's a sad song. And old song, but Hermes tells will sing it "again and again".
Now, Good Omens. The story of an sinful angel and a selfless demon. Trying, no matter what happens, stars, Eden, all the Comings, to save the world and save each other. Yet their story "starts, as it will end, in a garden". Despite their fight against fate, they reach the same point as they started, over an over telling their story again and again. They fall in love "time after time".
The difference is, they finally make a different decision. It may not save them, but it may let everyone else reach a happy ending. Bit this time their story changes, and in this new universe born of their decisions, they meet again. And fall in love again. And maybe this time, it isn’t too bad that the story will be told again and again because maybe each story will have a happy ending.
And as said in No One is Alone
Just remember, just remember
Someone is on your side (our side)
Our side
So yes, maybe the story must be told again, maybe it is because the the story must always be told again.
And most importantly, hope.