The Twilight darling might be cheating on Robert Pattinson!

While British actor is back home in London, 20-year-old Kristen Stewart is in Los Angeles and was seen as Soho House with her On The Road co-star, Garrett Hedlund, last December 24.

One insider said, “They were sitting together alone and they stayed until 2:30 am!

“Kristen and Garrett looked friendly but they weren’t kissing or touching.”

Meanwhile, it has been claimed that Rob and Kristen are reportedly getting sick of each other.

“Rob and Kristen have literally grown sick of each other,” said one source.

“They are in virtually scene together in The Twilight Saga: Breaking Dawn, and this has to be the most intense shoot yet. Everyone is wondering how they’ll survive.

“They’ve started sleeping in separate bedrooms because, after a long day of playing a married couple with a child, they’re exhausted and the last person they want to see is each other.

“They’re confused about the state of their relationship and whether they’re ready for the long haul.”

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