The question is why wouldn't R - or that's how R saw it, anyway. Maybe it was a troll thing.

"That...sucks," R says, sympathizing. He resists the urge to slap a cold, heavy hand on Karkat's shoulder and give it a pat. "Maybe...you'll see her again? Then...ask."

R skates by the fact Karkat could be dead in a month, once the next Arena rolls around.