Task: Story Composition
Input (English): Premise: Hannah met Nate half a decade ago. 
 Initial Context: They have been dating ever since. 
 Original Ending: Hannah desperately wants to get engaged. Nate does not propose to her. Hannah breaks up with Nate because he didn't propose. 
 Counterfactual Context: They just went on their first date.
Output (English): Hannah desperately wants to get engaged. Nate does not want to get married to her. Hannah breaks up with Nate because he didn't want marriage.