EXCLUSIVE INTERVIEW: RPattz BFF Marcus Foster Wants Everyone To Leave Rob & Kristen Alone!

Robert Pattinson’s best friend, musician Marcus Foster, has a few things to say about the Twilight star and his rumored romance with co-star Kristen Stewart.

In an exclusive interview with RadarOnline.com, Foster talked about his friendship with RPattz and the “nightmare” his life has become since capturing the hearts of American teens.

“It’s insane, it’s a nightmare, really,” he told RadarOnline.com before his performance on Saturday at the Hotel Café in Hollywood. “I find it all frustrating to be honest.”

As RadarOnline.com reported, Rob and Kristen were special guests at Foster’s show on Friday at the Hotel Café. But when RadarOnline.com asked Foster if he appreciated his famous friends turning out to support him, the rocker Brit played coy.

“Oh they were there? I didn’t know that,” he said.

Marcus did spend some quality time with his buddy before the show, visiting him at the Chateau Marmont, where Pattinson has been staying with Stewart since returning to L.A.

But when we asked Foster about his rendezvous, Foster became protective of his pals.  They're both “great people,” he said, adding that he “loves them” and that everyone should just “Leave them alone!”