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: My coworker got engaged in 2007. Sentence 2: She had dated a paramedic for several months. Sentence 3: He gave her a huge engagement ring. Sentence 4: Months later she found out he was cheating on her. Sentence 5: She returned the ring and canceled the engagement. Choices: a. Cheated. b. Messina.

a