An irresponsible saxophone player who avoids adult responsibilities and struggles to transition from a carefree college lifestyle to real-world commitments.
Their marriage is strained by Billy's drinking, infidelity-related behavior, and inability to accept adult responsibilities.
The plot identifies Felicia as Billy's wife. Billy later says he is getting a divorce and moving to New York City.
Billy's impulsive sexual behavior creates a direct rupture with Jules.
Billy makes a pass at Jules in her car, and Jules becomes furious and orders him out.
Their friendship becomes intimate while both are confronting uncertainty and major life changes.
Billy and Wendy kiss after drinking together, and later they have sex after Billy tells her he is getting a divorce.
Kevin provides practical support to Billy even though Billy remains unreliable.
Kevin helps Billy obtain a job at a gas station, and Billy later joins the group during the crisis involving Jules.
Explore the full interactive character relationship map of St. Elmo's Fire