Kristen Stewart Apologizes for Cheating on Robert Pattinson With Directo...

Kristen Stewart and fleeting paramour Rupert Sanders have admitted to cheating on their significant others, Stewart on boyfriend and Twilight costar Robert Pattinson and Sanders on his wife of seven years, Liberty Ross.
Their dalliance has been characterized as a brief fling, and it helps that no one bothered to issue a wayward denial to throw us off the scent—but a tangled web has been woven nonetheless.
So, here's a rundown of everything we know so far about what happened and when. A cheat sheet, if you will.
Kristen publicly apologizes for cheating on Rob
March 2011: Stewart, star of three Twilight films to date and about one year into seemingly dating Pattinson (cagey, those two), signs on to star as the titular heroine in Snow White and the Huntsman, to be directed by Sanders and costarring Charlize Theron.
July 2011: Stewart, Sanders, producer Joe Roth and castmembers including Sam Claflin, Chris Hemsworth and Theron appear at Comic-Con to discuss the film in its early stages.

October 2011: Stewart finally acknowledges she's in a relationship—and she almost admits it's with Pattinson! She tells GQ she was looking forward to exploring England while in country shooting Snow White "because [her] boyfriend is English."