Jennifer Aniston and Justin Theroux were ''very lovey dovey'' at a party in New York City.

The couple, whose relationship was recently rumoured to be on the rocks, attended a bash for the 42-year-old actor's upcoming HBO series, 'The Leftovers,' at Tao Downtown, with friends after walking the red carpet at the premiere on Monday night (23.06.14).

An eyewitness told E! News: ''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.''

Another source insisted the couple, who got engaged on Justin's birthday on August 10, 2012, but have yet to announce a wedding date, are doing very well even though they were recently forced to spend a lot of time apart because they were working on opposite coasts of the US.

The friend also poured cold water on new rumours that the former 'We're the Millers' actress, 45, is expecting their first child.

Speculation recently began swirling that the couple are planning to tie the knot on Justin's birthday this year after undergoing ''months of therapy'' to work through their issues.