It’s only fitting that the star of “Paranoia,” Liam Hemsworth, would be paranoid about several aspects of his new film — primarily sex scenes opposite Amber Heard and any scene with Harrison Ford.

But he is secure about his off-screen romance. Hemsworth and his fiancée Miley Cyrus hit the movie’s red carpet premiere in Los Angeles on August 8. They were joined by another usually camera-shy couple, Ford and his wife Calista Flockhart. Heard was the one who attended the film opening at the DGA Theater solo — sans boyfriend Johnny Depp.

Hemsworth said he felt uneasy shooting intimate scenes with Heard, who plays his girlfriend in the film, in front of the huge crew.

“It’s scary and it’s a little uncomfortable,” Hemsworth said. “I think the best thing to do is make jokes through it and we definitely had a few pranks throughout that scene.”

One of those pranks? A hidden sex toy, of course. “I substituted my arm for a large dildo in one of our more intimate scenes,” Heard said.

And an unsuspecting Hemsworth fell for it, going in for the grab only to find more than he bargained for.

When Hemsworth wasn’t anxious about his romantic scenes, he was nervous about working alongside co-stars Ford and Gary Oldman (who didn’t attend the premiere).

“It was a little scary at first,” he said. “Once I did get to set and worked with these guys, and as intimidated as I might have been coming into it, they were just so supportive and really cared about what was happening with my character as much as theirs. That took all the weight off my shoulders.”

Meanwhile, Ford played coy with reporters about his upcoming film projects. The actor said he was on board for “The Expendables 3,” but kept mum about reprising the role of Han Solo for “Star Wars: Episode VII.”

“They’re going to make another (‘Star Wars’)?” he asked jokingly. “Oh my god! I think it’s a great thing.”

On a more serious note, director Robert Luketic said “Paranoia,” a fast-paced thriller about corporate espionage that also stars Richard Dreyfuss, Embeth Davidtz, and Julian McMahon, is especially resonant in light of the recent NSA spying scandal.

“A lot of the technology and a lot of the concerns in the movie were really mirroring what we were going through right now,” he said. “Who owns the photos we take, the restaurants we tweet about? This data has a value. And it was really fortuitous that the whole NSA (Edward) Snowden thing exploded while I was in post-production.”

One of the film’s producers, Scott Lambert of Management 360, echoed Luketic’s sentiment that the film’s theme of the death of privacy is more relevant now than ever.

“I don’t think people realize how much they’re being heard or being seen every day,” Lambert said. “People still are confused and think there’s a lot of privacy when they talk on the phone or they text, they email. But everybody’s hearing everything right now. And this movie shows a lot of that.”

We can also expect more thrillers from Luketic, who already has two in pre-production.

“I made ’21’ and I’m really known as the ‘Legally Blonde’ guy — you know, romantic comedies and stuff, wedding dresses and that kind of sh**,” Luketic said. “It was never me. I fell into that by accident in film school so it’s great that the town can think beyond the mold they give you.”