In the digital age, online dating is rife with false information, particularly regarding height. The findings of Justine Moore, a partner at Silicon Valley venture capital firm a16z, have sparked widespread discussion. ChatGPT-4o has become a powerful tool for revealing height lies in online dating. By simply uploading four photos, the AI can analyze the proportions of individuals relative to their surroundings and provide accurate height estimates with an error margin of no more than 1 inch. Although this technological application addresses the challenges of height verification, it raises discussions about privacy, ethics, and trust crises. At the same time, it highlights the role of AI in image recognition and analysis.