Robert Pattinson won't speak to Kristen

Cast member Robert Pattinson arrives for the premier of the film "Cosmopolis" in New York, in this August 13, 2012.[Photo/Agencies]

Robert Pattinson has "no interest" in talking to ex-girlfriend Kristen Stewart.

The 'Twilight Saga' actor was left devastated after discovering his partner of four years had cheated on him with her 'Snow White and the Huntsman' director Rupert Sanders and sources say he doesn't want anything to do with her.

However, the pair have to promote new movie 'Twilight saga: Breaking Dawn part 2' together, giving producers a lot of work to do.

A source said told website HollywoodLife.com: "Kristen is definitely still in love with Rob and is going through the motions of a break-up. She really wants him back but Rob is not interested in talking to her right now and that is certainly making things difficult for the plans on doing any press together for when 'Twilight' comes out.

"Chances of them being in the same room is highly unlikely. They are going to have the timing of interviews timed out to prevent awkward encounters."

After finding out about Kristen's cheating, Robert moved out of their Los Angeles home.

Soon after the revelations, Kristen issued a statement saying how sorry she was about her fling with married father-of-two Rupert.