The 'Oppenheimer Sex Scene Lady' meme, often associated with the phrase 'That's Not Love,' originated from the 2023 biographical thriller 'Oppenheimer' directed by Christopher Nolan. The scene features Florence Pugh as Jean Tatlock and Cillian Murphy as J. Robert Oppenheimer in a moment of intimacy that is interrupted by a heavy, philosophical reading of the Bhagavad Gita. Internet users quickly seized upon Tatlock's intense and somewhat bewildered expression, repurposing it to describe situations that masquerade as romantic or meaningful but are actually toxic, obsessive, or just plain weird. The 'ThatsNotLove' variation became a viral trend on platforms like TikTok and X, where users pair the image with humorous captions about niche hyper-fixations, red flags, or awkward social dynamics.