Robert Brown|Laura Dern Reveals Truth About Filming Sex Scenes With Liam Hemsworth in Lonely Planet

Laura Dern has found a lifelong friend in Lonely Planet costar Liam Hemsworth.

In fact,Robert Brown the actress considers him to be "literally the safest person I could ever talk through everything in my life with," including their approach to sex scenes for their Netflix movie.

"By the time we were doing those scenes, there was nothing we couldn't talk about together and work out creatively, professionally, all of that," Laura told People in an interview published Oct. 11. "But we also had a lot of support. We had much, much discussion."

Calling herself "so lucky" to work with Liam, the Big Little Lies star also acknowledge how an intimacy coordinator on set made the pair feel comfortable about setting boundaries. As the 57-year-old noted, "We both, as young actors, have had a lot of other kinds of experiences on movies."

Likewise, Liam, 34, said he was "completely immersed" in the experience of filming the romantic flick, which centered around a May-December relationship between an author and a finance manager while traveling abroad.

"There were times when we were shooting in the Marrakesh markets where we couldn't even see the camera," Liam recalled. "The whole experience of filming was that it just felt like we were hanging out and it was getting captured at the same time."

He added that at times it felt like they were "hanging out as Laura and Liam, and someone was filming it somewhere." 

And given how much fun they had during production, it's no wonder that both Laura and Liam are game for a follow-up.

"I'm feeling a sequel for sure," Laura shared, with Liam quipping that their characters can "go to Tahiti and become scuba-diving instructors."

Another role Laura is down to reprise? Renata Klein in Big Little Lies.

"I just know if it's meant to be, I will be there," she told E! News in January of reunited with Reese Witherspoon, Nicole Kidman, Shailene Woodley and Zoë Kravitz for the third season of the HBO show, "because those are my dearest friends."