"Jude and Sienna are just friends and are seeing each other socially occasionally as they are both on Broadway, performing just one block apart," a rep for Law tells Glamour.com.
Law, 36, and Miller, 27, broke up in 2006 after dating on and off for several years. At one point they were engaged to be married, but those plans were derailed when Law's affair with his children's nanny came to light.
Mixed ReviewsIn a 2007 interview, Miller said that experience led to "a loss of innocence on my part," adding: "I feel like I grew up."
Law has received mixed reviews for his turn as Hamlet at the Broadhurst Theatre, with critics divided on the effect of his highly animated performance.
Likewise, Miller has earned a variety of reactions to her acting in After Miss Julie, with the more charitable critics calling her "compelling" and "persuasive."