Kristen Stewart and Robert Pattinson

Kristen Stewart apparently went “mad” earlier this week at a party in London when a reporter enquired about her relationship with Robert Pattinson.

“That’s none of your business,” the 19-year-old told the reporter who had questioned her.

A source said, “Kristen went mad,” according to ShowbizSpy. “She was very, very rude,” the source added.

Stewart complained about the lack of privacy in her life in an interview with the magazine Grazia in November.

But her relationship with Pattinson, whether it’s on or off, will continue to inspire curiosity. Just yesterday, OK magazine reported the two had been spotted at a London pub, chatting, sharing cigarettes and kissing.