In the How I Met Your Mother season three episode "Rebound Bro," Barney attempts to train his awkward coworker, Randy Wharmpess (guest star Will Forte), to be his new wingman following a falling out with Ted. The episode introduces the "Reacher and Settler" relationship theory and features Ted navigating a major step in his relationship with Stella. You can watch this episode on Hulu or Disney+.