practicing a wedding dance and taunts them in front of Burt. After Kurt admits that Karofsky threatened to kill him, Burt instigates a meeting with Sue, Karofsky's father, and the two boys; Sue expels Karofsky. While the Hummel–Hudson wedding is being arranged, Sue advances her own marriage plans. Her mother, Doris, a retired Nazi hunter who was an absentee parent to Sue and her sister Jean, arrives attempting to atone for her absence, but is so critical of her daughter that Sue disinvites her. The day of the wedding, Santana Lopez, who wants another chance at Finn, suggests he reveal they had sex to boost his popularity at school. He refuses, as he loves Rachel, who admitted to him that she lied when she claimed to have slept with her then-boyfriend Jesse; Finn claimed he never had sex with Santana. At the wedding, New Directions perform "Marry You" by Bruno Mars, after which Burt and Carole are married. Finn uses his best man speech to apologize to Kurt; he announces that Finn and Kurt are now "Furt". The glee club dedicates a performance of Mars' "Just the Way You Are" to Kurt, and the stepbrothers dance together. Kurt and his parents learn that the school board reversed Karofsky's expulsion and gave him a verbal warning. Sue resigns as principal in protest (reinstating Principal Figgins as principal), and Burt and Carole use their honeymoon savings to enroll Kurt at Dalton Academy, which has a zero-tolerance policy against bullying and is the school that Kurt's friend Blaine attends. Production Sue's parents were mentioned and their occupations as Nazi hunters revealed in the season one episode "The Power of Madonna". According to Lynch, Sue's mother left her two daughters to pursue her career, and returns home retired after the last Nazi has been captured. On working with Burnett, Lynch said, "I'm a little nervous, but I can't wait to get in scenes with her ... It's like playing tennis with a master." The origin behind Sue's antagonistic personality was explored in this episode; plans at the time were for Burnett to reappear on the series in a future episode. This is Burnett's and Lynch's second time working together, the first being the 2009 comedy film Post Grad. In an interview after BAFTA/LA's Brittania Awards, Lynch told People a wedding was in the future for her character. A tracksuit wedding dress was created by