First, most Twilight fans refused to believe it.
They were convinced that Us Weekly was lying
They even convinced themselves it was all a good photoshop job:
They quickly chose "Robsten Is Unbroken" to support the couple
And then there were a bunch of these:
Some have faith that the couple will stay together
Some have chosen Kristen's side
And this one person chose the side of Liberty
But mostly, people are team RPatz