The Roommate Transmogrification
Bernadette announces that her dissertation has been accepted, earning her a Ph.D. and a well-paid job. Later Bernadette decides to buy Howard an expensive watch as a present and tells him to “let her worry about the money”, a comment that disturbs Howard. Meanwhile, Leonard’s and Priya’s noisy sexual encounters sends Raj to spend the night at Sheldon’s apartment. When Leonard finds him in his bed, he proposes that Raj moves in with Sheldon until Priya finds her own place. Raj likes the idea, signs Sheldon’s roommate paperwork and moves in with him. He then prepares a fancy dinner for them which delights Sheldon who decides Raj is a much better roommate than Leonard. Penny stops by, stays for dinner and the both of them get drunk from the wine Raj served. Penny confesses to Raj that she “screwed up”, as she should not have broken up with Leonard, and that she would be “on” him (Raj) if they were not friends. Priya receives a video call, Leonard overhears that she is moving back to India and storms out revealing their relationship to her parents. At the end of the episode, Sheldon discovers Leonard sleeping on their couch, just before Howard shows up and announces that he had a fight with Bernadette over the watch. Penny wakes up and is horrified when she notices Raj in Leonard’s bed beside her. She tells him that last night never happened and tries to sneak out of the apartment; however, they are busted by the others. Penny just states that “it’s not what it looks like” and leaves. Sheldon then asks “What does it look like?”
Title reference: Raj becoming Sheldon’s new roommate.