After finding out about Stewart's cheating, Pattinson moved out of their Los Angeles home.
Soon after the revelations, Stewart issued a statement saying how sorry she was about her fling with married father-of-two Sanders.
Meanwhile, Stewart has been pictured in public for the first time since Pattinson reportedly broke up with her.
Looking pale and preoccupied, the Twilight star wore a low-key outfit consisting of a baseball cap, cropped T-shirt and grey skinny jeans as she carried a bunch of flowers in Los Angeles.
And a representative for Pattinson denied reports that he pulled out of upcoming Twilight conventions in a bid to steer clear of Stewart.
Pattinson and Stewart had reportedly decided to avoid each other by pulling out of appearances at four events in the US, but a spokesman for Pattinson said the rumour was untrue, claiming the actor was never scheduled to attend the conventions.
"We have not cancelled any confirmed professional appearances for Robert," the rep tells GossipCop.com. "Specifically, he was never invited or set to attend these events."
- Bang! Showbiz with Cover Media