The hunk admits he has formed a very special relationship with his 20-year-old co-star while working on the Twilight movies.
'Kristen and I have lived a great adventure together with the Twilight films,' says Robert, 24.
'We are very close and no one can understand what we've gone through together the last few years.
'When we're together, we understand each other so well that we don't have to say a lot to explain what we're thinking. Kristen is a wonderful girl.'
The Twilight Saga: Eclipse will be released in the UK on 9 July.
Where to next?
- New Twilight Eclipse trailer - watch here
- Robert Pattinson's best ever pics
- Twilight trivia - 31 Fun facts about the films, books and cast
- See Kristen Stewart's new hairstyle