"I believe you, I just..." He needs to see it for himself. Needs Ratchet's pulse under his fingertips, to feel the warmth of his skin and see the light still in his eyes. They're going to have to be more careful next escape attempt, he can't see that happen again. His friend crumpling to the ground like a rag doll, unresponsive. It replays in his mind and he shakes his head sharply, then leans in and down to catch Ratchet's mouth. Kissing is a much better thing to be occupied with.