Miley Cyrus and Liam Hemsworth made a joint appearance at a red carpet premiere of "Paranoia" in Los Angeles on Thursday, but the couple reportedly acted like "strangers" at the event.

"Miley and Liam acted like they didn't even know each other the entire night," a source told Us Weekly. "She was wearing her ring but they acted as if they were strangers."

Although Liam Hemsworth was reportedly giving Miley Cyrus kisses, they were "short, awkward and he didn't seem into them," the source also told Us Weekly.

Miley Cyrus and Liam Hemsworth break up rumors have been intensifying with the couple spending more time apart - the "We Can't Stop" star has been promoting her newest album, "BANGERZ," while the "Hunger Games" star has been filming several different pieces.

While Miley Cyrus confirmed the status of their engagement last month during an interview with "Good Morning America," speculation the couple might be splitting continued to grow after her little sister Noah told reporters the Hollywood couple hasn't started planning their wedding yet.

Miley Cyrus even visited Liam Hemsworth in Canada while he was shooting his newest film "Cutbank" late last month, but revealed later on that she's the only one making strides to keep the relationship alive.

There's no official word yet on the couple's engagement status.