His fingers tighten when her hand covers his, groaning lowly in approval at the way she pulls his hair. It lends to the feeling of being used in the best possible way, the image solidified in his mind when she finally starts to rock her hips. Tony opens his mouth further for her, loving the way her body knows how to move to get her closer to the edge, even without him doing much of anything. This is exactly the way he fantasized it would be, and he is reveling in being the object in this moment that can make her feel this good. "Fuck," he huffs out, taking a breath before snapping to obey, tonguing her clit and allowing her to ride his face on towards her completion. He nods vigorously, trying to get her off and agreeing both with the sentiment, not wanting to pull back far enough for any real words, moaning and moving with her to urge her over the finish line.