Tension snaps through John for a second as Ianto grabs him, a wave of bristly irritation that eases down slowly as he listens to him talk.

He turns back and watches Ianto's slide down to grasp his, processing slowly, then his eyes lift again.

"Ianto," he manages finally, "Take it easy, alright? You haven't done anything wrong."

Because he hasn't, not in John's opinion. It isn't his fault that John is still adjusting slowly.