This episode explores the enduring nature of passionate love in long-term relationships, challenging the common belief that romantic intensity inevitably fades over time. Against the backdrop of research showing high divorce rates, psychologist Arthur Aron presents findings from his studies revealing that a significant percentage of couples report intense love even after decades together. More significantly, brain scans of these couples showed the same dopamine reward activation as those newly in love, indicating a persistent biological basis for passionate love. For instance, Aron recounts a study where couples, some married for 20 years, reported still being "all over each other physically," defying the stereotype of declining intimacy. The discussion then pivots to Aron's "shaky bridge" study, demonstrating how misattribution of physiological arousal can influence romantic perception. This concept is further illustrated by a story about confusing flu symptoms with attraction. Ultimately, Aron's research suggests that maintaining passionate love requires actively seeking novelty and shared experiences, fostering self-expansion within the relationship, and prioritizing responsiveness and shared celebrations of success.