Episode 1. What is unrequited love, a.k.a. limerence, and where is the tipping point when it becomes obsessive or pathological? In this first episode of the series, the concept is defined and its effects are explored. We hear personal stories, like that of Will and Abby, a couple whose budding love story falls apart and turns toxic. We also hear from author Lisa Phillips, who shares her own tale, and Professor Albert Wakin, who studies this behavior.