Whilst sorting out Bernadette's wedding gifts, Penny confesses being unsure of her feelings towards Leonard, and might break up with him again.She asks Bernadette and Amy not to mention this to Leonard; however, Amy tells Sheldon, who cannot keep the secret but holds back from telling Leonard.
Amy forces Raj to leave, so he crashes on Leonard and Penny's date.
Leonard, unlike Penny, wants to discuss their relationship and resents Raj's intrusion, but has to accommodate him for Penny.
Jim Parsons won the Primetime Emmy Award for Outstanding Lead Actor in a Comedy Series at the 65th Primetime Emmy Awards for the episode "The Habitation Configuration".
Mayim Bialik submitted the episode "The Fish Guts Displacement" for consideration due to her nomination for the Primetime Emmy Award for Outstanding Supporting Actress in a Comedy Series at the 65th Primetime Emmy Awards.
Later, she insists she's fine with where they are going, as they aren't getting married.
Meanwhile, Stuart joins the gang on Sheldon's condition that he act like Howard whom he is replacing as Raj's friend, so he must eat Raisinets at the movies and play the same cards as Howard during Mystic Warlords of Ka'a.That night he wakes Penny in her apartment and tells her never to hurt his friend Leonard.The next day, when about to talk to Leonard about her doubts, she looks into his sad face and sleeps with him instead.When he demands she return to drive him home, she says she will break up with him unless he says something romantic.He responds with a stunningly romantic soliloquy which she finds incredibly touching until he admits quoting it from the first Spider-Man movie.After they lose badly to Penny and Amy at Pictionary and Penny declares she can beat them at anything, Sheldon and Leonard challenge the women to a series of games.