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The three-year relationship between Robert Pattinson and Kristen Stewart, which was rocked by infidelity last week when Us Weekly released compromising photos of Stewart with her married Snow White and the Huntsman director Rupert Sanders, is showing no signs of repair -- Robert has reportedly asked Kristen to move out of the house they once shared.

A source tells People that Robert, who already moved out of the house Thursday, recently asked Kristen to remove her belongings from the Los Angeles home. 

On early Saturday morning, a U-Haul moving truck was spotted outside of the house.

Pics: Kristen Stewart & Robert Pattinson in Happier Times

The once seemingly solid couple were no longer speaking to one another until this recent request for her to move out, People adds.

"The entire thing has been such a blow to Rob. Talk about having his heart ripped out," a source tells People. "Rob just isn't going to be able to get past the cheating – one time or not."

Video: Rob & Kristen -- A Relationship in Retrospect

But he'll have to be able to set aside his personal issues in about a month to promote the final installment of the Twilight saga -- the two are set to co-present at MTV's Video Music Awards on September 6, followed by their worldwide promotional tour for The Twilight Saga: Breaking Dawn -- Part 2, out November 14.