Kristen Stewart has been getting her own back on Robert Pattinson for enjoying a night out with actress Sarah Roemer by openly cosying up to musician Marcus Foster, according to reports.
Rob was seen leaving a Los Angeles bar and entering a car with Roemer recently, which has - In Touch reports - led to Kristen seeking a bit of revenge.
A source is quoted as saying: "Rob doesn’t like how close Kristen is with Marcus. Rob asked her to stop calling him so much, but she refuses.
"Rob and Marcus are good friends, and Kristen is playing off of that to make Rob jealous.
"She likes having someone to make Rob jealous and remind him that other guys find her attractive."
Foster contributed two songs to the soundtrack of 'The Twilight Saga: Breaking Dawn - Part 1'.
This comes despite other reports suggesting the glamour couple are set to tie the knot in a ceremony on the Isle of Wight.
'The Twilight Saga: Breaking Dawn - Part 1' is on general release.
'Breaking Dawn'...



























