Robert Pattinson and Kristen Stewart may be one of Hollywood's most private couples, but Rob just couldn't help spilling the beans on falling for Kristen in a recent interview, revealing he knew they would have amazing chemistry before they even met.

ROB AND KRISTEN: ROMANCE IN PICS

Speaking to E!'s etalk Canada, Robert Pattinson told how he knew before he met Kristen Stewart that they would instantly hit it off, after watching one of her old movies.

'I knew before I met her [that we had chemistry],' Rob laughed, to which Kristen giggled, 'Yeah, me too.'

Referring to seeing 14 year-old Kristen star in an adventure movie, he continued: 'I was watching Zathura one day when she was frozen.'

Far from keeping quiet, usually shy Kristenpiped up: 'When you meet people that you want to embark on a creative endeavour with, it's like so intense and exciting it's palpable.' Looking to R-Patzbeside her, she added: "You're like, 'It's him!"'

Now that's love.

At Comic-Con last week Robert Pattinson opened up on his Twilight beauty secret, revealing he was asked to don a ginger wig to re-shoot some key scenes for the upcoming final instalment of the Breaking Dawn movie.

Rob said: 'We had to do the re-shoots on [Breaking Dawn - Part 2] a few weeks ago, and it was the first time I had to wear a wig.

His advice? 'Don't succumb to peer pressure and start wearing a wig like everybody else in this cast.'

More here:
Robert Pattinson talks 'chemistry' with Kristen Stewart