Jen and Justin jetted off to Cabo with Courteney Cox and Johnny McDaid for her 48th birthday celebration in February 2017.
The actor shared this photo to his Instagram in honor of Aniston's birthday.
The couple stepped out for a romantic date night in Paris.
The Friends star stood by Theroux's side during the April 2017 premiere of The Leftovers.
They made their last official appearance together as a couple to celebrate Jason Bateman receiving a star on the Hollywood Walk of Fame in July 2017.