We spoke to the star, who plays Thor in Avengers Assemble, at the UK premiere of the Marvel super hero movie in London yesterday.
When asked what it was like to star opposite Stewart, Hemsworth said: "It was great! [She showed a] great amount of integrity and commitment to that role, and I think we all came into it knowing what the director Rupert was capable of, and we knew that if we did our bit it would be something special. So far, the film looks pretty impressive."
The heartthrob also revealed what we've all been wanting to know - what a girl would have to do to impress his demi-god character, Thor.
"Well, what did Jane do to impress Thor? She showed an incredible amount of integrity and intelligence, and I think that caught him by surprise," he mused.