On Oct. 4, the friendly exes spent four hours together at the home the actor is renting in Beverly Hills.
Rob's been renting a five-bedroom home in a celeb-friendly gated community since putting the Los Feliz home that he and Kristen once shared on the market.
Simple comforts: Rob has been spotted stocking up at a nearby market on essentials like toilet paper and beer.
After hanging out at Rob's place, the Twilight costars headed off at the same time.
So much for incognito: Kristen gives Rob's Jeep a glance in the rearview mirror of her instantly recognizable blue pickup truck.
A source tells E! News that Rob's friends are completely surprised that the two are in touch again.
"There was lots of animosity after the split, but as time moved on they moved on and they gradually got over it," says another insider.
The exes are "cordial now," the source adds.
Kristen is seen pulling out of Rob's community, her ex not far behind.
Kristen sees that she's been seen.
Kristen realizes that they have company.
After realizing the paparazzi were onto them, Rob turned around and seemingly headed back toward home.
Kristen gives the paparazzi a piece of her mind as she and Rob go their separate ways.
Kristen heads off on her own.
NEXT GALLERY: Rob & Kristen romance rewind