Kristen Stewart and Robert Pattinson's break-up appears to be taking its toll on them almost as much as it's taking its toll on us.

The once-inseparable Twilight sweethearts split up recently, and Kristen has reportedly been despondent since then, according to People.

Kristen "[hasn't left] her house for days, but [has] surrounded herself with friends 24/7," a source says. We're here for a hug if you need one, Kristen.

Things were apparently rocky between the two ever since he returned to L.A. from NYC on May 8.

"They again went from spending every second together, to spending more time apart at their separate houses," a source says. "Kristen has been in a terrible mood, and it was obvious that things were not great with Rob." 

And of course, the fact that they didn't spend his birthday together on May 13 was not a good sign.

"It was very strange that they didn't celebrate Rob's birthday together," the insider adds. "He had friends over at his house, but Kristen was not part of the celebration." Sob!

"For the past few days, they have not spent any time together," the source continues.

The break-up became a lot more permanent on May 19, with Rob moving all of his stuff out of her home  including his dogs, which had lived there for years. 

How sad is this break-up, people? If anyone needs us, we'll be in the fetal position. 

Source: People