Watson said. “We’re not selling sex. So, whenever there is any hint of that, everybody gets terribly excited.”

Emma Watson: 'Potter' isn't selling sex
September 14, 2010 12:51 PM ET

In an interview with Empire magazine, the three stars of “Harry Potter and the Deathly Hallows” – Daniel Radcliffe, Rupert Grint and Emma Watson, who play Harry Potter, Ron Weasley and Hermione Granger, respectively – opened up about filming, friendships and finally finishing 10 years of hard work. (Oh, and that highly-anticipated kiss scene.)

“Deathly Hollows,” Watson explained to the U.K. publication, is a far cry from the first six movies in the series. First, it’s split into two parts and took 18 months to shoot. Second, it’s much more emotional.

“The emotional stuff is much harder,” Watson told Empire. “These last two films have been on a completely different level in terms of what they’ve demanded from me physically and emotionally.”

Radcliffe said the scenery made it look like a World War II film, with Hogwarts turned into a fiery pile of rubble and young wizards’ corpses strewn across the battle field.

“No acting required; it’s absolutely terrifying,” Watson added. “I felt like I was in the army.”

Grint’s character, who normally provides some comic relief, takes on a much more serious role.

“You begin to see his paranoia as he sees Hermione and Harry getting closer and he’s not quite fully trusting of Harry’s ability,” Grint said. “Things begin to get a little bit heated.”

It gets heated on the battlefield as well. Part one of the movie focuses on Harry, Ron and Hermione on the run looking for Horcruxes, with part two dedicated to the apocalyptic battle with Voldemort.

“The second half is just this unrelenting chase that turns into a battle and doesn’t stop,” Radcliffe said. “You barely have a chance to catch your breath.”

And as for that kiss scene? Not so steamy.

Watson said the kiss between Ron and Hermione has been building for eight films, but “Potter” isn’t like other, shall we say...more overt movies.

“It’s not ‘Twilight,’ you know,” Watson said. “We’re not selling sex. So, whenever there is any hint of that, everybody gets terribly excited.”

Look for part one of “Deathly Hallows” in theaters on November 19. Part two will follow in July 2011.