Jennifer Aniston has gushed over her boyfriend Justin Theroux calling him "really cute."

The 43-year-old actress is totally smitten with her beau who she has been dating for nearly a year.

And although they star in new movie Wanderlust together, Jennifer insists that their relationship did not flourish on set but began after filming wrapped.

"Nothing happened on that movie," the Hollywood star told ABC News' Lara Spencer.

"I mean, that was sort of that's what is a rumour. I mean, it's again, it's the easy rumour. But nothing happened.

"We were just friends, great friends on the move. I've known Justin for a long time we met when he was shooting Tropic Thunder. He is really cute."

And the actress who has been in the limelight for over two decades says that she has gotten used to attention from the paparazzi but she is trying to keep her relationship with Justin as private as she can.

"I've gotten to a place where I know we can we know how to maneuver around them a little bit more," Jennifer revealed. "I've laid on many a floorboard."

Wanderlust opens in US theatres on February 24.