Not Your Typical Love Story

Sarah has had a crush on Bruce Matthews ever since she could remember. But, Bruce fell for Sarah ever since he laid his eyes on her. One day, however, Sarah and Bruce realized how the other felt about them, from a hidden person. This hidden person knew absolutely everything about these two people. Every Monday Bruce and Sarah got a note in their locker, telling them different tasks, or else this hidden person would tell the other person how they felt. Until one day, one person neglects to do the weekly task. What happens after this hidden person tells the other how they feel about them?