Jack more tactile than usual must be touching all the time. Jack was the sort of man that seemed to touch people as a matter of course. A light touch on an arm, on a shoulder. Ianto had to admit that Jack often stroked his cheek as he passed, or brushed a hand across his shoulders. It didn't occur to him that it was because Jack was afraid that Ianto wasn't real. Though what Ianto would do if he knew, who knows.
Ianto's problem was that sometimes he didn't feel quite real. Jack was right about that. Ianto wasn't all back. Not yet.
"You'd get more than samples, but then you're partner in this, aren't you?" Ianto's lips thinned a little and he tipped his head, resting it against Jack's shoulder. The pebble was dropped between his feet. "I wish you didn't have to go through it. It's worse than I thought it was and I thought it was bad to begin with."