Baumbach met Actress Jennifer Jason Leigh in 2001, while she was starring on Broadway in Proof. The couple married on September 2, 2005. They have one son. Leigh filed for divorce from Baumbach on November 15, 2010, in Los Angeles, citing irreconcilable differences. The divorce was finalized in September 2013. Baumbach's romantic and creative collaboration with actress/writer/director Greta Gerwig, which began late in 2011, is described in an April 2013 profile in The New Yorker.