Task: Story Composition
Input (English): Premise: Bob called Erica to ask her to a Valentine's Day date. 
 Initial Context: She told him yes that she would love to go with him. 
 Original Ending: He was excited about the upcoming date. He planned everything for the perfect night. When he picked her up she was smiling and happy. 
 Counterfactual Context: Bob was floored when she let out the secret that she was dating his brother.
Output (English): He was distraught about this. He planned everything for the perfect night with a different girl. When he picked her up she was smiling and happy, and Bob was happy.