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The Shortlist for May 23

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Did Robert Pattinson put Kristen Stewart 'through the ringer' about Rupert Sanders?As Twi-hards dry their vampire tears and attempt to move on with their lives in the wake of Robert Pattinson and Kristen Stewart's split, insiders continue to muse about what went wrong between the longtime on and offscreen lovers. It seems that Stewart's "momentary" -- and unfortunately photographed -- "indiscretion" with director Rupert Sanders last summer looms large in their decision to part ways. "He really put her through the ringer," an insider tells Us Weekly. "Ultimately, it was like, 'Either we move past this or we don't.' It wasn't good for either of them."Another insider confirms that Pattinson had trouble forgiving and forgetting. "Rob always brings up the cheating scandal to Kristen," says the source. "He hangs it over her head." On Monday, Pattinson, 27, moved out of the home he shared with Stewart, putting a nail in the coffin (ahem) of the "Twilight" stars' romance.RELATED: Co-star couples who've called it quits
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