This quote expresses a sense of disillusionment and disappointment. The speaker initially had higher expectations or a more positive perception of the person they're addressing. However, their actions or behavior have proven otherwise, causing the speaker to realize that the person is not as unique or "different" as they had believed.
The phrase "the sad thing is" conveys a feeling of sadness or regret about this realization. It highlights the emotional impact of discovering that someone doesn't live up to the image the speaker had of them. This quote resonates with anyone who has felt let down by someone they held in high regard or believed to be special.
In essence, this quote speaks to the complexity of human relationships and the emotions that can arise when our expectations are not met. It serves as a reminder that people are not always what they seem, and it's important to approach relationships with an open mind while also being prepared for the possibility of disappointment.