Many British sources are saying that the couple, who have been seen frequently in London, are together again.
The English actor, star of Cold Mountain, went to the Wyndham theatre in London to see the final showing of As You Like It, starring Miller, 23.
After the show, the two left for the Savoy hotel, one of the hippest hotels in London.
The couple’s relationship was tested recently when Law admitted to having a sexual affair with his children’s nanny.
During the past few weeks, the English press has maintained that Miller is still in love with Law.