A source told Us magazine that the 27-year-old actor really put Stewart through the ringer. “Ultimately, it was like, ‘Either we move past this or we don''t.’ It wasn’t good for either of them,” the source said.
Meanwhile, another source told the publication that the Cosmopolis star repeatedly used Stewart''s tryst against her in arguments between the two, which happened with increasing frequency toward the end of their relationship.
"Rob always brings up the cheating scandal to Kristen," a second source told the publication. "He hangs it over her head."