Kristen Stewart, Robert Pattinson Breakup Inevitable? (Report)

Trouble seems to be brewing between Kristen Stewart and Robert Pattinson according to a number of reports.

The buzz of another breakup started up when a source gave information to Life & Style magazine indicating that there were problems in the relationship. That source stated, "Things with them aren't good. They've been fighting a lot." The publication adds that Pattinson may be the one to end the relationship as he is unhappy.

"It's just a matter of time before he ends this," says the source. "Rob is at a point where he sometimes ignores her. He'll go out and won't respond to her calls or texts right away. Things will be strained for a while."

The source adds that Kristen is trying her best to repair the relationship that she essentially harmed this past summer when her infidelity was made public. Stewart had a love affair with "Snow White and the Huntsman" director Rupert Sanders during the filming of the move. When the news got out, Pattinson moved out of their home and remained quiet about their relationship. Early in the fall, the two got back together and did promotion for "Twilight Saga: Breaking Dawn Part 2," the final installment of the franchise.

Whether their relationship's demise is inevitable is unknown at this point. According to another source on the Life & Style article, "One pal said: "If they are able to work out being apart while Kristen is filming then they have a shot."