That's the thing about Ianto. Sometimes, for all Jack's experience, Ianto knows what he needs more than Jack does. He doesn't know if it's instinct or keen observation or simply knowing him really, really well, but this time he seems to have got it absolutely, perfectly right. Jack presses against him, a fleeting thought passing through his mind that if they're given enough time to continue this D/s thing, Ianto has the potential to be one of the best Doms he's ever had, someone who'll really push him to new heights of intensity. He makes another sound that's less like a sob and more like a laugh and pulls back enough to actually see that tender, attentive look in Ianto's eyes, and let Ianto see the smile that's somewhat tremulously forming on his face.
"Fuck, Ianto, that feels amazing!" he breathes, fingers finally loosing some of their desperate tension. "Still want me to get myself off, or shall we try for a hands-free orgasm?"