Signless can't remember if he ever did make up his mind about murder in any concrete sort of way, but he does know that's not why he came here. Karkat's anxiety is coming off of him in waves, and it's enough to bring Signless back to his senses.

The fact that he isn't here for violence is confusing his instincts.

"I...wanted to see you," he says. That sounds creepy but he is not self aware enough to acknowledge it.