It may be temporary, but it appears to be real and, as you might expect, quite upsetting:
And in the wake of this unexpected split, insiders close to the actress tell E! News that Stewart is "heartbroken" and just "so sad." But there may be hope for the couple yet.
"They are going to stay living at Kristen's house because of the dogs," the source says. "It's not fully over or [Rob] would have moved out."
The couple had been spotted all around California over the past few weeks, celebrating Kristen's 23rd birthday and attending Coachella.
But word of Robsten difficulties spread last week, culminating in yesterday's sad news.
Still, worry not, fans. As one friend of the pair makes very clear: "They will be back together in no time."
Let's all hope so!