Robert Pattinson and Kristen Stewart in trouble again?

Los Angeles: Actor Robert Pattinson and Kristen Stewart are reportedly on the verge of splitting again.

According to America`s Life & Style magazine, the two can`t stop fighting and friends fear they could be heading for a break-up. "Things with them aren`t good. They`ve been fighting a lot. Rob isn`t happy. It`s just a matter of time before he ends this," showbizspy.com quoted a source as saying. Their relationship previously hit a rocky patch when Stewart`s intimate photos with ‘Snow White And The Huntsman’ director Rupert Sanders became public. Stewart and Pattinson split, but they were back together again. IANS