Theroux, 42, who proposed to Aniston on his birthday in August 2012, is still keeping their wedding a secret, reported Contactmusic.
"We have hot feet, but we're not going to let you guys know", he said.
"We're still happily engaged", Theroux added.
The couple celebrated the premiere of Theroux's new HBO series in New York City on June 23.
Theroux and Aniston, 44, are expected to marry on his birthday this year.