Jack turned his head to look at Sulu as he spoke, but he whirled on Ianto before Sulu'd even finished, almost not hearing the latter half of what the other man was saying because of what the first few words had been. "You knew that you'd been unsteady on your feet, and you were trying to go down the stairs?" he asked, his voice starting to fill with anger.

Ianto bit his lip. "I... I didn't think it would get worse," he said quietly.

Jack shook his head in disbelief. "All of those times I came in to check up on you, ask you how you were doing. You lied. You lied every single time."

Ianto wanted nothing more than to just sink back in his chair and vanish into thin air. "...I didn't want to worry you," he said. "I've been ill a lot, recently. I. In case this was the end, I. I didn't want you to be upset about what was happening to me."

"...you're feeling like you're going to pass out every time you stand up, and you didn't tell us?" Jack spat at Ianto, the fear that he had for the fact that this was bad, this was really bad, morphing into an intense rage. "What else are you keeping from us, Ianto?!" he raged.

Ianto shook his head. "I...what? I'm not..."

Jack stood up abruptly, his chair scraping loudly against the floor. "Like hell I believe that, Ianto, I know you!" He shook his head, almost forgetting that Sulu was there with them at all. "You're using me, Ianto! You're using me again! And this time Lisa's not around as a convenient scapegoat for your lying, now is she?!"

Ianto took in a quick breath, the flippant mention of her name cutting deep. "You leave her out of his, Jack!" he said, sharply.