Oh, Jack will be thinking about him all right. Every time he sits down - fuck, every time he bends over , at this rate. And he wouldn't have it any other way.
Ianto's question sends another, violent tremor through him. Ianto knows as well as he does that he's perfectly capable of coming without being touched - has seen it happen on multiple occasions - which makes this less of a question and more of a challenge. He laughs breathlessly, twisting his head to grin round at Ianto. "If you do your part right, certainly I can!"