Engaged actor Liam Hemsworth arrived at XS Nightclub in Las Vegas with a mystery brunette Sunday night who Life & Style revealed to be Mexican actress and singer Eiza Gonzalez.

"They never left each other's sides," an eyewitness told the magazine. "They were with a few people and spent a few minutes at the VIP DJ stage table. They then headed back to a more private VIP bungalow cabana near the pool."

Her full name on Twitter is Eiza Gonzalez Reyn. Coincidentally enough she "follows" Hemworth's fiancee, Miley Cyrus, and is a fan of House music, as she also follows Sebastian Ingrosso, Axwell and Alesso. She also likes Lana Dey Rey, Lenny Kravitz and The Foo Fighters.

The 23-year-old began her acting career in 2003 and signed a record deal in late 2008, according to the magazine. She has two albums released: Contracorriente and Te Acordarás de Mí. They peaked at No. 10 and No. 14, respectively, on the U.S. Billboard Latin Pop Album.

Cyrus and Hemsworth got engaged in June 2012 after dating three years. They were last photographed together on Aug. 8 at the Los Angeles premiere of his movie, Paranoia. Over the weekend she stopped following him on Twitter.

A source close to the couple recently confirmed to Radar Online that they are officially "on a break."

"They've split for now," the insider said. "Miley and Liam have a very tumultuous relationship and both are exhausted. It's a complicated relationship. The wedding is on hold, for now. It's not cancelled but it doesn't look promising."

Watch Gonzalez acting silly in the video below.