Robert Pattinson, Kristen Stewart ‘soul-searching their relationship’

Washington: Robert Pattinson’s hectic schedule, it seems, is taking a toll on his off-screen relationship with his co-star Kristen Stewart.

With Pattinson attending European premieres apart of the just-released fourth instalment of ‘The Twilight Saga’ apart from the 21 year-old actress, the pair only coming together for the Los Angeles and London events, it seems the long distance has been troublesome.

“They are doing a lot of soul-searching about their relationship - they’ve burnt each other out,” Contactmusic quoted a source as telling the UK’s Express.

The pair were all smiles on the red carpet in London and also spoke about their sex scene in the new movie ‘Breaking Dawn - Part 1’.

It would appear though that despite the pairs apparent unity in front of the cameras and press, rocky times lie ahead away from them.