If you still think of Shailene Woodley as that annoying pregnant chick on ABC Family's "The Secret Life of the American Teenager", get ready to be absolutely (and, yes, spectacularly) amazed.

The 21-year-old actress has been labeled Hollywood's next big thing (consider those Jennifer Lawrence comparisons the sincerest form of flattery), as evidenced by her starring roles in the highly-anticipated films "Divergent" and "The Fault in Our Stars", both being released next year. However, in just a few days, the actress has another exciting project opening in theaters — the Sundance hit "The Spectacular Now" (in theaters August 2).

Woodley, who quickly transitioned from the teenybopper ABC Family show to her breakout role in "The Descendants," stars in the coming-of-age film penned by "(500) Days of Summer" writers Scott Neustadter and Michael H. Weber. The story follows high school seniors Aimee (Woodley) and Sutter (Miles Teller), two seemingly opposite individuals who form a lasting relationship as they enter the next chapter of their lives.

MTV's Josh Horowitz recently sat down with Woodley to chat about the film and her relationship with the oh-so-charismatic Miles Teller. "It felt right," Woodley says of her co-star. "It was just one of those moments when you just instinctively know it has to be this person."

But the on-screen couple, who won the Dramatic Special Jury Award for Acting at Sundance, also formed a strong relationship off screen. "We're opposite sides of the spectrum, which is why we piss each other off and love each other so intensely," Woodley laughs. "He helps me have more fun when I can get caught up in being serious, and I think I help him ground himself in a way that's more natural than perhaps some of his... other choices."

And what about that sex scene that everyone's buzzing about? "It's my favorite scene in the whole movie," Woodley says. "This movie is so genuinely sweet and vulnerable and sensitive… It was a nice way for us to lose our on-screen virginities, because it was a very safe environment and we felt very cared for."

Check out more from Shailene in the video above.