"Down On Bended Knees" Kristen Stewart Frustrated By "Too Late To Apologize" Robert Pattinson

Robert, 26, has been playing hard to get with Kristen, 22, since rekindling their romance and a close source says the actress is starting to get fed up because she feels that she's been putting in all the effort to make it work.  She  believes she’s been punished enough for her affair with her married Snow White and the Huntsman director Rupert Sanders, the source says -- and thinks Robert now has to get over it otherwise the romance is destined for failure.

Kristen has been trying so hard to win Rob back, from been hanging out with his friends and even travelling to London to make a good impression his family over the Thanksgiving holiday. However Robs sister we are told are not her greatest fans and are probably the reason he is dragging feet on the matter. Interestingly Kristen has signed up for the sequel to Snow White and the Huntsman – but Rupert, 41, has dropped out.