After three times, what might someone say about watching a movie?

When someone says, "I've already seen it," they are indicating that they have watched the movie before. This statement directly reflects the context of the question, which involves having viewed the movie on three separate occasions. The phrase "already seen" shows a sense of familiarity and suggests that the person has experienced the film multiple times.

This is particularly relevant because it highlights the speaker's previous engagement with the movie, reinforcing the idea that they are knowledgeable about its content. In contrast, other options imply different levels of experience or intention regarding the movie. For instance, expressing that "I've never seen it" indicates a lack of exposure altogether, while stating "I should see it next" indicates an intention to watch it in the future, and saying "I'm done with it" suggests a complete disinterest after viewing it. Each of these alternatives does not capture the idea of having already watched the movie multiple times, making "I've already seen it" the most suitable response.