Kristen Stewart cheated on beau Robert Pattinson with Snow White and the Huntsman director Rupert Sanders - who is married and has two children.
Angelina Jolie's affair with Brad Pitt started on the sets of Mr and Mrs Smith while he was still married to Jennifer Aniston.
Alicia Keys was the other woman in producer Swizz Beatz marriage to a woman named Mashonda.
Denise Richards hooked up with her best friend Heather Locklear's husband and Bon Jovi guitarist Richie Sambora.
Sienna Miller was spotted in a topless make-out session with married actor Balthazar Getty.
Claire Danes met actor Billy Crudup on the sets of Stage Beauty and the two ended up leaving their respective partners.
Shilpa Shetty's husband Raj Kundra has been married before. His ex-wife Kavita claimed that Shilpa broke up their marriage.
Mahesh Bhupathi's ex-wife Shvetha Jaishankar claimed that he cheated on her with Lara Dutta when they were married.
Mona Kapoor had said in an interview that she was shocked when she came to know that her husband Boney Kapoor was in love with ...
Kristen Stewart is reportedly so distraught in the wake of her affair with director Rupert Sanders being exposed that she is refusing to eat.
The Twilight star - who is still in hiding after boyfriend Robert Pattinson walked out of their home, has become a 'nervous wreck' and is "living off a diet of cigarettes, Red Bull (energy drink) and crisps", reported Showbiz Spy.
"Kristen is a nervous wreck and existing on a diet of cigarettes, sugar-free Red Bull and the occasional bag of potato chips," said a source.
"She's been hiding out at the Los Angeles home of a producer friend and is looking pale and worn-out," said a source.
Us Weekly exposed Stewart's affair with Rupert Sanders.
The source also said that the star was so "grief-stricken" that even when she tries to eat she gets sick.
"Whenever anyone tries to push her to eat even a small bowl of soup, she either claims that she's just had something, which isn't true, or that she's nauseous and there's no chance of keeping anything down," they continued.
"Kristen is grief-stricken and has hit rock-bottom. In many ways, Kristen living off cigs and Red Bull is a way of punishing herself", the source continued.
MORE ON KRISTEN STEWART
R-Patz-Stewart’s intimate stills from Breaking Dawn 2 released
Even though Kristen Stewart and Robert Pattinson’s real-life romance has hit the rock bottom, newly released stills of Breaking Dawn 2 show their character Bella Swan and Edward Cullen eternally in love. FIND OUT MORE
Kristen Stewart ready to face camera again
Actress Kristen Stewart will make her first official appearance since her cheating scandal at the Toronto International Film Festival in Canada next month. READ MORE
Kristen Stewart cancels MTV awards show appearance
Actress Kristen Stewart has pulled out of the MTV Video Music Awards ceremony, which she was due to host with her ex-boyfriend Robert Pattinson. The award ceremony is slated to take place here next month. Stewart, 22, is now heading to the Toronto International Film Festival to
promote her movie On The Road. CLICK ON
Kristen Stewart upset about facing wrath alone
Although actress Kristen Stewart has apologised for cheating on her boyfriend actor Robert Pattinson, she is reportedly upset about having to suffer the wrath alone. Stewart, 22, had an affair with director Rupert Sanders, even though she was in a three-year relationship with the actor.
Robert Pattinson and Kristen Stewart in happier times