The sitting room was warm, but not overly so. Severus realized the décor was something he felt quite comfortable with, so he deduced where he was. "Are these my quarters?" he asked Harry.
Harry gave him a peculiar look before answering simply, "Yes."
Severus looked around and began to notice things that could not possibly belong to him – not unless he had had an entire personality transplant in the last few decades. "I share these rooms with someone," he stated, rather than asked.
Harry looked wistful as he answered again, "Yes."
Severus was about to make a very large leap in logic but Harry cut him off.
"I think we should get you to the lab," he said, and made his way over to a heavy door, opened it, and intimated that Severus should go inside.
Once they were both in the lab (which was really very excellent, Severus noticed), Harry led him over to a small table with a sealed vial on it.
"This is all we could get of the potion," Harry said, holding up the glass bottle only about six inches high. "The rest fell on the floor when you collapsed into the cauldron."
Severus took the vial from Harry's outstretched hand and scrutinized it.
"We sealed it because the fumes seemed toxic. Please promise me you won't inhale them again," Harry tried to joke.
Severus raised a single brow in disbelief. Did this man think Severus was an idiot? Of course he wouldn't inhale the fumes again. "I will treat the potion with the utmost caution," he assured Harry dryly. He turned to scour the perimeter of the room for the materials he would need to dissect the potion and brew a counter-potion. He began gathering the supplies he needed but stopped suddenly when he realized Harry was still in the lab, watching Severus with an indiscernible look in his eyes.
"Are you my assistant?" Severus asked him.
He thought he saw a flash of hurt go through Harry's eyes. "No," Harry answered him. "Sorry, I'll leave you to your work. I'll be…just outside if you need anything."
Severus nodded and watched as Harry left the laboratory and shut the door behind him. Before long, Severus was lost in the challenge of figuring out what the potion had turned into and how he could reverse its effects.