Wait. Killed him...? Ianto's breath caught and he stared at Jack, wanting badly to go over to him and shake him. He was alive! "I'm not dead, they didn't kill me! I don't know what they told you, but it's not true." Without that kiss Ianto had no way of identifying himself to Jack. Not in a place where everything was monitored and watched and where clones could be made at the whim of whoever ran this place.
Ianto slid down the door, till he was seated, and just stared. God, the fury in Jack's voice. The anger, the hatred. It .. made him ache. "Anything I suggest you'll accuse me of taking it from my own mind or manufacturing it, so taste is out of the question, too, I reckon. So's scent. How's your psychic abilities, lately?" All Torchwood personnel were trained in at least level one use of psychic abilities. It let them see through slightly psychic paper. Ianto was inviting Jack into his mind, if he could get there.