The door to the stairwell swung open suddenly, sending a jolt of adrenaline through Peter that broke through the haze of depression sinking over him. Most of the lights from the city were out by this time of night, and at first he couldn't tell who it was that came tearing out and across to the wall. The person stopped there, leaning against the wall like it was the only thing holding them up.
Peter held still, squeezing his eyes shut briefly with a silent sigh. Maybe they'd go away again. He'd come up here to be alone, so he could be miserable and miss Andrew where no one else had to see. Maybe they'd leave again without noticing him huddled there. But they didn't move, except, after a moment, to lean more heavily against the wall. Then the man spoke, quietly to himself, and while Peter couldn't make out the words, he did recognize the voice. Robin's mutinous tone told him all he needed to know about why his friend had come bursting out onto the roof. He wondered if he should just stay put and keep his mouth shut, give Robin the illusion of privacy.
He felt guilty for the thought, though. Robin had been an amazing friend to him. It was not as though Robin didn't have problems of his own to worry about, yet time and time again he'd made time for Peter, keeping him company, looking after him, offering advice. He didn't only do so for Peter either, but for Cas, Much, Mal, for everyone here really. And he and Becker had put everything on the line to get them that damn ring. Robin was constantly trying to save the world, to look after everyone else, and it was never going to be enough - not by any fault of Robin's, but it was the truth. Nothing was ever going to be enough. But while Peter didn't dare let himself hope, Robin kept fighting. He admired the younger man for that. And Peter didn't want to let his friends face all this alone. Maybe it wouldn't last, but he could stand with them, by them.
So he steeled himself, scrubbed a hand over his face to obscure any telltale signs that he'd been about to breakdown, and hoped the dark of the night would hide the rest. Then he quietly pushed himself up, moved cautiously closer to his friend. "Robin?" he called softly, not wanting to startle him.