Reports claimed that British actor Robert Pattinson decided to spend the holidays in London with his family away from his girlfriend Kristen Stewart.

Rob and Kristen may have patch things up in their romance but that does not mean that they will be spending every moment with each other. The actor may want to test the actress' trust and loyalty by spending some time apart.

The Twilight couple has been dating for almost three years since they met in the set of the Twilight Saga. But the relationship went rocky when it was revealed the brunette cheated on him with married "Snow White and the Huntsman" director Rupert Sanders last summer.

Rob is taking the Christmas holidays as a time for some well-earned rest without Kristen as an insider reportedly told Heat magazine, she's not welcome to the Christmas family dinner.

"The family were smiling at Kristen and looking totally at ease on the red carpet but back at the family home over the following weekend things were more difficult," an insider told the mag. The source also shared that Kristen felt so uncomfortable when she spent the Thanksgiving in the Pattinson's home as Rob's sisters were not the most welcoming.

It was initially planned that Kristen and Rob to enjoy some alone time on a trip to Mexico before he heads to Australia in January to begin filming new movie 'Rover' the insider claimed, but now those plans have been cancelled.

"Rob's mum wanted him to spend Christmas with them in London and, before their trip to the UK, which had been his and Kristen's Plan. From London, they were going to fly to Mexico for New Year, but that's all changed now," the source explained.

RadarOnline.com reported that Kristen Stewart is getting increasingly frustrated for Rob's lack of commitment in their relationship and his reluctance to fully forgive her of her scandalous affair.

Kristen feared that Rob's lack of commitment and reluctance to forgive will lead to another break-up. Kristen also thinks that it is about time that they will forget the past and move on to their new life together.

The couple will be busy next year. Kristen Stewart will film the sequel of "Snow White and the Huntsman" without Rupert Sanders on the helm. The script has already been written and production will begin late next year. Rupert didn't want to be a part of it to begin with because he is desperately still trying to save his marriage. The search is still on for a new director.

Rob, on the other hand, will head to Australia to film his new project "The Rover" with Guy Pearce. A rumor spread that the actor forbids Kristen to visit him on the set. Of course, the actress is not ecstatic about the three-month separation.

However, Kristen Stewart and Robert Pattinson neither confirmed nor denied the struggle in their relationship.