Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: Two of my coworkers in the office had an affair. Sentence 2: The man's wife found out. Sentence 3: He stopped the affair and promised to be faithful. Sentence 4: His wife made up a FB page in his name. Sentence 5: She tried to catch him cheating on Facebook, but he has been good. Choices: a. Playing Billiards. b. Affair.

b