Twilight star Kristen Stewart feels 'betrayed' over Robert Pattinson's growing closeness to Katy Perry, friends have revealed.
Sitting on the singer's lap and cuddling up to her at the Kids Choice Awards in March, Kristen, 23, showed just how close she was to pop star Katy, 28.
However, a source told MailOnline that Kristen feels 'incredibly down right now and betrayed' at rumours of a romance between Katy and her ex-boyfriend and former co-star Robert.
And the petite brunette has now cut off all ties with Katy - despite greeting her with a big hug at the Met Ball in New York last month - and a source said: 'Kristen is in a certain state of denial. She can't let go of Rob or get over him.
'She keeps trying to contact Robert and find out what he is doing but her attempts to see Rob have been rebuffed. Rob is not responding to her. '
Robert, 27, and Katy were spotted together on Saturday night at at the Icelandic singer Bjork's concert at the Hollywood Palladium in Los Angeles - as the actor is said to be leaning on the chart-topping star for support following his split from Kristen.