In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story to not connect with the rest of the story. Ensure that the generated sentence is contextually relevant to the story.

Title: Proposal. Sentence 1: Sam loved his girlfriend. Sentence 2: He wanted to marry her. Sentence 3: He took her on a hiking trip. Sentence 4: Atop a mountain Sam proposed under the stars.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Her boyfriend tells her it's over and he found someone else.