Justin Theroux

Justin Theroux

Justin Theroux insists he doesn't have cold feet about his upcoming wedding.

The 'Leftovers' star, who proposed to Jennifer Aniston on his birthday in August 2012, says they are still very happy together and can't wait to get married, but plan to keep their nuptials a secret.

Asked about their plans to tie the knot, the 42-year-old actor told 'Extra': "We have hot feet, but we're not going to let you guys know."

He added: "We're still happily engaged."

The couple, whose relationship was recently rumoured to be on the rocks, were all over each other at an after party to celebrate the premiere of Justin's new HBO series in New York City on Monday night (23.06.14).

A source previously said: "Justin and Jennifer were very lovey dovey. They were upstairs in a private VIP area all night with Liv Tyler and Jason Bateman.

"[They acted like] they were at their own private party. They didn't socialise much with other people."

The couple spent most of the event "upstairs," according to the source, who added: "Jen and Justin were very intimately talking for what seemed to be a long time. They looked very happy together."

Speculation recently began swirling that the former 'Friends' actress, 45, and her beau are planning to marry on Justin's birthday this year after undergoing "months of therapy" to work through their issues.