Adam Scott in Talks to Reunite with 'Bachelorette' Writer-Director for 'Sleeping With Other People'

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Alison Brie and Adam Scott

Alison Brie also is negotiating to replace Kirsten Dunst in the comedy starring Jason Sudeikis and written and directed by Leslye Headland.

Adam Scott is in talks to reunite with his Bachelorette writer-director Leslye Headland for the latter's upcoming comedy, Sleeping With Other People, Headland told The Hollywood Reporter following a performance of the play version of Bachelorette in Brooklyn on Saturday night.

Alison Brie also is in talks to play the female lead in the film, THR has confirmed, after Kirsten Dunst, who was originally attached to star, had to drop out.

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It was announced in September that Dunst and Jason Sudeikis were set to star in Headland's film about a womanizer (Sudeikis) who befriends a serial cheater; ultimately, the two develop a romantic attraction to each other. Headland wrote the screenplay and is set to direct.

Dunst, who previously starred in Headland's VOD hit Bachelorette, had to drop out due to a scheduling conflict.

But Headland noted that neither Brie's nor Scott's deal is done yet.

"The only person that's a definite, in that he's been announced and is on board, is Jason [Sudeikis]," she said.

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The former assistant to Harvey Weinstein said that she's aware from her years working for the mogul that things could still fall apart.

"Films are always like, it may not happen, we'll see," she said. "Even going into the premiere of Bachelorette, I was like, 'It still may not happen'…I don't know if it's just being an assistant and having seen how the sausage is made, where you just sort of come at everything with this feeling of…'It's not set in stone, kids.' I've seen shit fall apart over less."

Will Ferrell's and Adam McKay's Gary Sanchez Productions, which also produced Bachelorette, is producing Sleeping With Other People. Gary Sanchez is working with IM Global, the international sales, production and financing company.

Ferrell, McKay and the company’s Jessica Elbaum will produce the film.

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Brie, who stars in NBC's Community and has a recurring role on AMC's Mad Men, is repped by WME, Velocity Entertainment Partners and Sloane Weber. She is currently in production on another Gary Sanchez title, Get Hard, with Ferrell and Kevin Hart. Brie also is starring in Universal's Search Party, which hits theaters Sept. 12.

Scott, who stars in NBC's Parks and Recreation and recently appeared on the big screen in The Secret Life of Walter Mitty, is repped by WME.

Borys Kit and Tatiana Siegel contributed to this report.