Miley Cyrus could turn out to be the latest cheating starlet -- if her on-screen relationship with her co-star also has fire offstage.

The Sun has reported that Miley Cyrus has been enjoying locking lips with co-star Josh Bowman and might not actually be ready to walk down the aisle with fiancé Liam Hemsworth of “Hunger Games” fame.

Cyrus filmed the 2012 comedy “So Undercover” with Bowman, the heartthrob from “Revenge,” and even went as far as calling it her “best job ever.”

The Sun quoted her saying about Bowman: "He's so cute. I had this scene where I had to tell him, 'Your balls are amazing,' and I got so awkward doing it.

"I also had to kiss him in our first scene together. It was fabulous. Making money to kiss Josh? Hello, best job ever. The next day I was handcuffing him to a radiator and sitting on him."

The movie is set to hit theaters this Friday, but the two seemed cozy during press and promotional events and Cyrus gushes over her co-star in interviews, The Sun reported.

So should Liam Hemsworth feel threatened?

While both guys hit homeruns when it comes to their looks, Hemsworth and Cyrus are always in the tabloids with rumors about the couple breaking up.

Most recently she was said to have caused the breakup between tween sensations Justin Bieber and Selena Gomez.

Hemsworth allegedly is not at all pleased with Cyrus sharing their personal information and fights on Twitter. She even once deleted her account, but quickly reinstated it.

When they stated dating, Cyrus still had her all-American look, but in recent months she chopped off her hair and dyed it bleach blonde. She was even mistaken by Flavor Flav for Gwen Stefani at an event.

Cyrus’ style change could have also signaled a change in attitude and could be something else that has put her relationship with Hemsworth on the rocks.

She’s still only 20 years old and might have actually matured just enough to realize that she’s not ready to commit to one person for the rest of her life.

It wouldn’t be surprising if she hooked up with another guy in the meantime while she figures out what she really wants from Hemsworth.