Two years after proposing on his 41st birthday, Justin Theroux says he's still "loving" his engagement to fiancee Jennifer Aniston, and dishes on how his upcoming birthday plans will be different this year Credit: Taylor Hill/FilmMagic

Almost two years ago, Justin Theroux proposed to Jennifer Aniston on his 41st birthday. Now, the Leftovers actor admits it will be more about food than diamonds while celebrating his 43rd on Aug. 10. During an appearance on Good Morning America on Thursday, July 10, the smoldering star discussed briefly how he will spend the day with his bride-to-be.

"This birthday, I think, will be just cakes and, you know, who knows? We'll see," he laughed to co-host Robin Roberts. "It's hard to top after the proposal. We're also loving the engagement as well."

Theroux, 42, popped the question to the Friends alum, 45, on his 41st in August 2012 over dinner at NYC's Blue Hill restaurant. Since then, the couple have been concentrating on their careers, vacations with pals and parties at their L.A. pad than wedding planning. (Last month, Theroux was joined by Aniston at the New York City premiere of his new HBO series, The Leftovers. They threw a Fourth of July BBQ bash for friends, too.)

A veteran movie actor and screenwriter for over a decade, Theroux became a bonafide household name once he began dating Aniston in 2011. The relationship, however, hasn't been hard to handle.

"It doesn't feel like a hardship, it doesn't feel difficult," he said in the August issue of Details magazine. "It can be an annoyance, but it's not the end of the world. You have to center on what its core thing is, which is that you met someone you fell in love with. It's hard to explain. I just find myself wondering, 'What's the big f---ing deal?'"

"There's a huge distinction between wanting to act and wanting to be a famous actor," Theroux added. (In his earlier years, he had small roles in American Psycho, Zoolander and Charlie's Angels: Full Throttle.) "Most of the people that jump off buses in Hollywood just want to f---ing 'make it.' And I never had that drive. Honestly. I could never visualize myself in that way."