Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: Allie had been with Fred for awhile. Sentence 2: But one day she saw him kiss someone else. Sentence 3: Allie was horrified. Sentence 4: She decided to leave him. Sentence 5: She never looked back.

Betrayal