The key to Twilight's success is that it's sexy … without the sex, according to Robert Pattinson.
The British heart-throb, who plays Edward Cullen in the saga, said the trick is to capture the point leading up to the act to get viewers hooked, rather than the sex itself.
In an interview with Nightline, the 24-year-old said: "[Fans] like that moment before [sex] … the kind of tipping point before it goes over.
"I mean, everybody likes that. That's the best part, for a relationship."
And with Pattinson and Kristen Stewart's characters set to get even closer in Eclipse – which hits cinemas on June 30 – fans can expect more of that addictive "will-they, won't they" chemistry than ever.
"If there was a hard and fast decision by both [Bella and Edward] saying, 'Yeah we're going to remain virgins our entire lives, it's never going to happen,' I don't think it would be as popular a series," Pattinson said.