Natalie dating Australian co-star?

Hollywood star Natalie Portman is reportedly romancing Chris Hemsworth, her co-star in upcoming film Thor. Read on to know more.

Hollywood star Natalie Portman is reportedly romancing Chris Hemsworth, her co-star in upcoming film Thor.

Chris is the elder brother of teen star Miley Cyrus' rumoured boyfriend Liam Hemsworth, Star magazine reported.

Portman met Star Trek actor, Chris after they were cast together in forthcoming movie Thor. Shooting is not scheduled to begin until January next year, but reportedly the pair is dating already.

"Sparks have been flying since their first meeting. He seems to have a crush on her, and she clearly loves the attention," a source told the magazine.

The 28-year-old star has been single since splitting from folk rocker Devendra Banhart last year.