WATCH: Sneak Peek of all-new NEW GIRL episode - 'Backslide'

Justin Long, Mary Elizabeth Ellis and Phil Hendrie Guest Star

NEW GIRL: Jess (Zooey Deschanel, R) is surprised by what Paul (guest star Justin Long, L) tells her in the "Backslide" episode of NEW GIRL airing Tuesday, May 1 (9:00-9:31 PM) on FOX 50.

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By FOX50.com

Story Created: Apr 30, 2012 at 3:37 PM EDT

Story Updated: May 1, 2012 at 12:09 AM EDT

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When Jess and Nick run into their exes Paul (guest star Justin Long) and Caroline (guest star Mary Elizabeth Ellis), the gang fears they both may “backslide” into romantic relationships.

Meanwhile, Schmidt desperately tries not to get aroused as he deals with a delicate medical issue, Winston suffers the consequences of a wild night out with his boss (guest star Phil Hendrie) and Cece brings Schmidt to a nursing home to meet her grandmother (guest star Madhur Jaffrey) in the “Backslide” episode of NEW GIRL airing Tuesday, May 1 (9:00-9:31 PM) on FOX 50. (NG-123) (TV-14 D, L, S)

Cast: Zooey Deschanel as Jess; Jake Johnson as Nick; Max Greenfield as Schmidt; Lamorne Morris as Winston; Hannah Simone as Cece

Guest Cast: Justin Long as Paul; Mary Elizabeth Ellis as Caroline; Phil Hendrie as Joe Napoli; Madhur Jaffrey as Nana; Jack Carter as Burt; Angela McEwan as Marjorie; Melissa Tang as Jenn; Jack Axelrod as Charlie