EXCLUSIVE: Amanda Peet is set as a lead in Togetherness, HBO’s single-camera comedy pilot written, directed and executive produced by brothers Mark and Jay Duplass. It follows two couples living under the same roof who struggle to keep their relationships alive while pursuing their individual dreams. Peet plays Tina Morris, an energetic and beautiful woman who is fun, outgoing, mischievous and smart in both dress and brainpower. Tina relocates from Houston to Los Angeles and moves in with her sister Michelle Pierson (Melanie Lynskey) and her husband Brett. Also moving in with the Piersons is Brett’s friend Alex (Steve Zissis), a struggling, over-the-hill actor who had been left homeless. Peet’s casting comes on the heel of Manhattan Theater Club’s announcement last week that it will stage Peet’s first play, The Commons Of Pensacola, next season. There is talks that Blythe Danner and Sarah Jessica Parker, who participated in a reading of the play, may join the production. On screen, Peet, repped by Gersh and Management 360, co-stars in boxoffice hit Identity Thief and has been recurring on CBS’ The Good Wife. At HBO, she joins her husband, David Benioff, co-creator/executive producer of the network’s flagship series Game Of Thrones.