Let's give Nina Dobrev a moment. The Vampire Diaries star is really tired, and for good reason: she's been playing two roles for all of season two.

The actress is featured in the latest issue of Teen Vogue and talks to the magazine about the challenge of portraying Elena and Katherine.

“When I signed on to the show, I didn’t know whether I’d be playing both girls. And while it’s been cool, it’s also exhausting because it’s double the work," Nina says. "You invest so much of your heart and soul and energy into making even one character. It’s like doing two movies at once.”

As for chatter that she's dating Ian Somerhalder, Dobrev puts that talk to rest:

"We expected the rumors. Like, if I wasn’t dating Ian, I’d be dating Paul. A lot of people who work together end up dating, so it wouldn’t be unusual, but I’ve never dated anyone I’ve worked with.”

Visit the official Teen Vogue site to read the full interview.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.