Teresa Palmer thinks Liam Hemsworth is "the most perfect male co-star."

The 26-year-old Australian actress and the Hunger Games hunk are castmates in upcoming romantic war drama AWOL.

The pair locked lips while filming the movie and Teresa sees why Liam's girlfriend Miley Cyrus is head over heels.

"I did get to kiss Liam," Teresa told E! Online. "Liam is lovely. He's the most perfect male co-star."

Teresa enjoyed creating such a vivid onscreen love story with Liam.

"It's very much a [The] Notebook style movie," Teresa explained. "I try desperately not to fall in love with a soldier who's gone AWOL from the Vietnam War but that soldier is Liam Hemsworth! It's sort of a bittersweet romance between them. It's heartbreaking and beautiful."

Last year, Teresa and actor Zac Efron dated briefly following the actor's split from actress Vanessa Hudgens.

Liam and Miley have dated on and off for three years and she recently gushed about how proud she is of his success. The pair were rumoured to be engaged, but Miley recently discounted the speculation as hearsay.

AWOL will be released later on this year.