The fifth season of Young Sheldon has answered a lingering question about Sheldon’s first roommate in The Big Bang Theory.
As noted by Screenrant, however, the fifth season of TBBG’s prequel series Young Sheldon has shed some light on the topic.
As the publication notes, this explains why a grown-up Sheldon in The Big Bang Theory did not kick out Sebastian despite the living situation clearly having devolved into uninhabitable.
Fans of the hit sitcom will know that Sheldon (Jim Parsons) had a first roommate, Sebastian (Oscar nominee Steven Yeun), prior to Leonard (Johnny Galecki) moving in.