He smiles at the grunts, and then grins widely when Ianto decides to let go and comes out with that lovely cry. "That's it, good boy, just let it come," he croons, hitting him carefully - lovingly, even. Watching the sensations ricochet through him, watching him come apart until he just can't take it any longer.
"I think that's enough," he declares, and flings the strap down onto the bed, stepping in between Ianto's spread legs so Ianto will feel the soft scrape of the fabric of his trousers instead of the smoothness of leather, and leaning down low over Ianto's back, skin on skin, kissing the back of his neck. "Gonna fuck you now, because I can't wait any longer."