"Seems like the Ishimura's a sore spot for you," That much was obvious, more so now that Nate was growing more aware of what was going on around him. Isaac was probably going to regret giving him that medicine sooner or later. Still, even if Nate had questions himself, he also was wary of this guy's temper. Unitologist or not, he didn't want to set him off when he was at such a gross disadvantage.

"I'm sorry." He didn't really know what he was sorry for, but putting together the pieces seemed to suggest that maybe Isaac had known someone on the ship. Or maybe the colony? Either way, he didn't like seeing others in pain over losing a loved one. Lexine had been heartbreaking enough.

As for the staring, Nate chalked it up to ... whatever reason that caused Isaac to jerk away from him initially. Maybe he thought he'd turn into a necromorph? Seemed legit.