6 Other Scandalous On-Set Affairs Plus: Robert Pattinson 'heartbroken' over Kristen Stewart's cheating By Evann Gastaldo, Newser Staff Posted Jul 26, 2012 10:46 AM CDT 5 comments Comments Kristen Stewart and Robert Pattinson attend "The Twilight Saga: Breaking Dawn - Part 2" Panel at Comic-Con on Thursday, July 12, 2012 in San Diego, Calif. (Photo by John Shearer/Invision/AP) (Newser) – Wondering how Robert Pattinson is feeling after learning Kristen Stewart cheated on him with her Snow White director? The Twilight hunk hasn’t said anything publicly, but a witness tells the Sun he and Stewart were arguing backstage at the Teen Choice Awards and he appeared “miserable, heartbroken, and humiliated” while “she was pleading.” Other sources, predictably, also describe his mental state using various synonyms for “devastated.” Meanwhile, the Huffington Post rounds up six other scandalous on-set affairs: Jennifer Lopez and Ben Affleck: Before this couple got the cutesy nickname “Bennifer,” they were homewreckers. Lopez was married to Cris Judd when she met Affleck on the set of Gigli, and three days before she filed for divorce she was already calling Ben her “new boyfriend.” Meg Ryan and Russell Crowe: Meg Ryan was spotted “cuddling, hugging, kissing” Proof of Life co-star Russell Crowe on set; a month later, she was filing for divorce from Dennis Quaid. Humphrey Bogart and Lauren Bacall: The 44-year-old Bogey was married when he fell for Bacall, 19, while shooting To Have and Have Not. Click for the full list, which includes two more vintage romances.