Naomi previously delighted fans by revealing the inner workings of her marriage while at a Hampton Bays event in September 2023.
The 55-year-old revealed the couple has a "pretty great sex [life]," and even confirmed which "position" she was loving most.
"I personally think sex becomes more pleasurable when you take out the fear of making babies," Naomi said at the event according to the Daily Mail.
"It feels more like, 'I'm going to do this for myself' [because] you're more confident with yourself, you've had experience, you're wiser," she added before cheekily revealing that her sex position of choice changed often.
"On top, underneath. Right now, I'm not fussy."
This candid confession came just three months after Naomi stunned fans with the news that she had married the American actor in secret after more than five years together.
The couple first sparked speculation that they had tied the knot on June 9, 2023, as paparazzi snaps of the couple in formal attire and matching rings emerged.
Just days later, Naomi took to her Instagram to share a selfie she had taken with her new husband on their wedding day, captioning the post "Hitched 🕊️🪢♥️," confirming that the rumours of their nuptials were in fact true!
Celebrity friends were quick to jump into the comments section to share their congratulations.
"So so happy for you both, Love you Nai - you did it! ❤️❤️❤️" fellow Aussie A-lister Nicole Kidman wrote.
"Woohoo!!! So happy for y'all!! 💕💕💕," wrote Reese Witherspoon.
"Ahh!! Congrats! Love you ❤️❤️" said Kate Hudson.
After co-starring in the 2017 Netflix series Gypsy, the pair fell head over heels in love with one another.
But it's not the first time the newlyweds had crossed paths, having shared the same Hollywood circles for years.
But despite their star power, the couple has kept much of their relationship under wraps, Billy previously telling reporters that he made a point of "not commenting publicly" about his personal life in 2018.
So private is the couple, is that they dated for more than four years before making their red carpet debut together at the 2022 Screen Actors Guild Awards.
Later in the year, they attended the Emmys together.
In April 2023, engagement rumours began swirling as Naomi was papped wearing a stunning ring on her left hand.
On the special day, Naomi wore a gorgeous lace Oscar de la Renta Sweetheart Water Lilly Guipure Dress, retailing at a very reasonable $7,390,51.
Naomi was previously in a long-term relationship with fellow actor Liev Schreiber from 2005 to 2016.
The couple co-parent children Alexander, born in 2007, and Samuel, born in 2008, together.
Billy Crudup also has a child from a previous relationship, a son William, born in 2004.