Tony waved Steve away, not because he wanted him to leave but because it felt important that he did before Tony decided he didn't care about the somber mood and just jumped him completely.
So unprofessional.
In the end though, he didn't need help -- and he was dismissed from Remus and Sirius' house pretty quickly. And after that --- well. He didn't have much of a reason to stay out, did he?
So he went home. To Steve. Who was, apparently, waiting in their bed naked. Tony close the door behind himself and leaned on it heavily, just taking in the sight. "Look at you," he said, tilting his head to the side slightly. "Glad to be back to you, huh?" He was overdressed and probably needed a shower but -- for now he could enjoy the view.