Sexiest Man Alive Chris Hemsworth on Why His Partying Days Are Over

Aussie got serious about his career, family and Matt Damon after move to H'wood.

"The fame, the parties, the women -- I did that stuff back home," the "Thor" star, 31, told GQ about his native Australia. "I got away with a lot more over there. Then I came here and sort of started over."

About the same time, he met Spanish model and actress Elsa Pataky. They married over the Christmas holiday in 2010 and now are parents to a 2-year-old daughter and twin sons.

Hemsworth said becoming a dad worried him.

"Just not screwing it up," he said.

"I’ve watched Liam do things I did at his age, like being in relationships he shouldn’t be in, or being reckless just to prove a point. And I had no empathy. My mom had to remind me I was the same way," Hemsworth told GQ during the interview running in its January issue.

"We became friends around the time I started to work, and I've really benefited from watching how he handles himself," Hemsworth told the magazine. "Matt's just a normal guy who has the movie-star thing figured out."