Teacher:Given a premise, an initial context, an original ending, and a new ending, the task is to generate the counterfactual context that is aligned with the new ending. Each instance consists of a five-sentence story. The premise is the first sentence of a story, and the second sentence, which is the initial context, provides more information about the story's context. The original ending is the last three sentences of the story. Also, you are given a new ending that can provide the new story with the same premise. You should write a counterfactual context to explain the small differences between the original and new endings. More specifically, a story context contains the general plot of the story. And a counterfactual context is a slight modification to the initial context. To sum up, you should write the second sentence of a story based on the premise(first sentence) and the new ending(last three sentences) of the story.
Teacher: Now, understand the problem? Solve this instance: Premise: Angel and her boyfriend were dating for over three years. 
 Initial Context: Angel and her boyfriend were both of legal consenting age. 
 Original Ending: Angel and her boyfriend decided to take things further by having sex. Angel and her boyfriend bought all the necessary protection needed. Angela and her boyfriend had consensual, protected sex all night long. 
 New ending: Angel and her boyfriend decided to have sex one last time. Angel and her boyfriend bought all the necessary protection needed. Angela and her boyfriend had consensual, protected sex all night long. 
Student:
Angel and her boyfriend were both sick of each other and decided to break up.