They Call It Potsie Love was the 13th episode of the third season of Happy Days; it was also the 52nd overall episode aired in the series. Written by Marty Nadler, the episode, which was directed by Jerry Paris, originally aired on ABC-TV on December 2, 1975.
Fourteen-year-young Joanie Cunningham falls hard for seventeen-year-old Potsie Weber when he looks deep into her eyes while rehearsing a romantic song with his band.
After Potsie practices a song at Arnold's, serenading Joanie with "Put Your Head on My Shoulder," Joanie develops a crush on Potsie and starts writing him anonymous "secret admirer" love notes, under the advice of Fonzie. Finally, Joanie arranges a meeting with Potsie at Arnold's at midnight, although Potsie sets his standards too high about who his mystery lover is.
- Heather Warren as Girl in Plaid Skirt (uncredited)