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: I had a boyfriend back in college. Sentence 2: We became couples for three years. Sentence 3: But then one girl came to our lives. Sentence 4: I caught them together holding hands. Sentence 5: I decided to broke up with him with no regrets. Choices: a. Christmas. b. broke up.

b