Kristen Stewart is reportedly unhappy with her ex-boyfriend and former Twilight Saga co-star, Robert Pattinson, for dating her friends after their split.

While the latest one he’s been linked to has been model Imogen Kerr, the Cosmopolis star has also dated Stewart’s friend Riley Keough.

Stewart reportedly thinks her ex is trying to get back at her for cheating with her Snow White and the Huntsman director Rupert Sanders.

“She flipped out on his voicemail. There are thousands of girls in L.A. Why does Rob need to hook up with her friends? He’s got to stop using her circle as a dating pool,” a source told OK! Magazine.

Meanwhile, Pattinson promoted his new film The Rover at the Cannes Film Festival this week and spoke about the tabloid culture.

He said he has a “disassociation” with fame, adding, "I am trying to eliminate any bit of vanity, I want to avoid any opportunity to pose (for the camera). Or whatever. Because if you get that opportunity to pose, you will probably take it."