After the explosive cheating scandal of Kristen Stewart with the "Snow White and the Huntsman" director Rupert Sanders, Robert Pattinson moved out of the love nest he shared with his girlfriend.

Now, one of the concerns of the many people is the promotional tour that the two will have to do for the premiere of the final installment of Twilight. There are rumors that Robert Pattinson will not attend the tour after he cut off all his contact with Kristen and that he dreads to see her.

Rob and Kristen are required to make joint appearances for the Twilight flick, including attending the movie's premiere together. Even if they appear together, how will they be able to shoo away the awkwardness between them as well as answer the controversial questions from the press that will swarm the media event.

"Rob is in pieces, but the Twilight love triangle storyline is nothing without him and Kristen. It is eating him up that he has no choice but to see her again because of work. His humiliation is total," a source told showbiz website PerezHilton.

There is no confirmation yet if the two broke up. However, Rob moving out of their home is a clear indication that the needed his well-deserved space.

A source from Summit Entertainment revealed the worrisome atmosphere for the Twilight's main cast.

"There's ­serious concern about the ­promotional tour, which is set to kick off in October. This is a potential nightmare for all involved. Fans look forward to seeing them together during interviews. It's great publicity for the film. Robert even used to be happy to go to events with Kristen that he wasn't contractually obligated to go to, like the Teen Choice Awards last Sunday," the source said.

The people in Summit are very anxious to move forward to the promotional tour. The cheating scandal will still be a big issue this fall. There are options to cancel the planned media events and go to safe routes such as Jay Leno and MTV but the execs are still thinking it through.

"The Twilight Saga: Breaking Dawn Part 2" will be released in Australian theaters on November 16.