The couple was spotted holding hands and running errands on Monday. They later joined pal and Aniston's Horrible Bosses and The Switch costar Jason Bateman for lunch at the swanky Fred's restaurant at Barneys.
It's been several weeks since Theroux and Aniston, who got engaged in 2012, were photographed out together publicly . He was in New York for Aniston's 45th birthday on Feb. 11, where he has been filming season one of the HBO drama The Leftovers. Meanwhile, Aniston is hard at work preparing to star in and produce Cake, an indie drama about a woman who becomes fascinated by a suicide.
They recently spent time together in L.A. away from the cameras at the end of February.