<P> In the season finale "Li'l Sebastian", Leslie and Ben continue their romance, but they have difficulty keeping it a secret . Ron finds out and warns them that Chris will fire them if he learns about it . As the city prepares for the memorial service for Li'l Sebastian, Pawnee's beloved celebrity miniature horse, Leslie and Ben are caught making out by a maintenance worker, so they send him home in exchange for his silence . Unfortunately, the worker had the propane for Li'l Sebastian's memorial flame, which results in later confusion behind the scenes, that Leslie and Ben struggle to fix throughout the night . Later, although the memorial turned out to be a success, things get even more complicated when Leslie is approached by scouts looking for potential candidates for elected office . They believe she would be a good candidate for upcoming city council seats, or possibly the mayoral position . With the expected increased media attention on her personal life, the scouts ask whether Leslie has any secret scandals in her life . She denies any such scandals exist, thus omitting her secret relationship with Ben, and the scouts promise to contact her about preparing an electoral run . </P> <P> Though their relationship had become rather serious, Ben and Leslie are forced to break up to avoid a scandal which could derail Leslie's city council candidacy . Ben understands, giving Leslie a "Knope 2012" button he had made . He then starts helping Tom run his business Entertainment 720, where he's shocked at how much money Tom spends without getting any revenue . He also helps Tom charm Joan Callamezzo to try to get her book club to include Leslie's new book, but Joan gets drunk and hits on them . He and Leslie end up sharing lovelorn looks with each other . Ben is dragged along to Tom and Donna's "Treat Yo Self", where he treats himself to a Batman costume and a good cry over his breakup with Leslie . </P> <P> While Leslie attempts to keep him in her life, Ben insists that he needs distance from her since being around Leslie is too difficult for him . Leslie continually tries to spend time with Ben until, through the help of Ben and Ann, she sees that she has been ignoring what Ben wants and doing only what she wants . Ben and Leslie meet at the Smallest Park, which is supposed to be their last project together . Leslie apologizes and tells Ben she'll leave him alone if that's what he wants . Ben responds that he doesn't want that but he thinks it's for the best . As Ben starts to leave, Leslie declares that she misses him like crazy and wants to be with him . After she asks how he feels, Ben kisses Leslie and the relationship is reinstated . </P> <P> Later, they confess to Chris about their relationship, and he launches an investigation to check for any possible acts of corruption, as Ben is Leslie's superior . It turns out that in the season three's finale, Ben and Leslie had bribed a maintenance worker to keep quiet about them after the worker witnessed them kissing . As that was a possible reason for termination, Leslie was ready to take full responsibility only to find that Ben resigned from his job in order to save hers . </P>

When does leslie and ben get back together
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