Rob Lowe and Rashida Jones leaving 'Parks and Recreation'

Rob Lowe and Rashida Jones will be leaving "Parks and Recreation" in next season's 13th episode, and fans hope that heralds a happy ending for the on-again-off-again relationship between their characters, Chris Traeger and Ann Perkins.

The NBC comedy isn't a ratings monster, but has a solid fan base and gets a lot of attention during awards season thanks to the show's lead, comedian Amy Poehler.

Cast members Aziz Ansari, Aubrey Plaza, Nick Offerman and Chris Pratt have received book, movie and comedy tour deals since the series began in 2009.

Jones and her "Celeste & Jesse Forever" writing partner have a two-year deal with Warner Bros. Television to write and produce projects for both cable and network TV.

Lowe recently appeared in HBO's Liberace biopic "Behind the Candelabra," and will appear as John F. Kennedy in Nat Geo's upcoming "Killing Kennedy" adaptation.

Jones's Perkins has been best friend to Poehler's Leslie Knope since the show's beginning. Lowe's Traeger joined the series in season two as a state auditor sent to the fictional town of Pawnee.

"Parks and Recreation" is currently filming its one-hour premiere in London, set to air September 26.