He lay there, idly stroking himself, as she walked into the room. She looked down at him nervously, blushing slightly at the sight of his cock, swaying slightly with each breath, the head red and smooth with the slightest gleam of moisture at the tip. He was looking at her, as well -- his eyes devouring her, tracing her curves beneath the slight, silken garment, already measuring her body against his own, how she would fit alongside him, how he would cover her below, how deep he could get into her. She shifted her weight from one foot to the other, her throat suddenly seeming dry -- but at the same time, she could feel her nipples tighten, and the barely-audible whisper of the cloth shifting over her breasts in response.
"Take it off," he said, sitting up on the edge of the bed to watch her more closely. She closed her eyes, trying to escape his gaze for a moment. Slowly, she lifted a trembling hand to the opposite shoulder, and slid the strap down until it fell of its own accord. Somehow, even that tiny exposure, the barest sagging of the neckline exposing the beginning of her cleavage, was a complete acquiescence, and they both knew it. There was nothing she would deny him from there. The scent of her own arousal rose to her nostrils, and she pressed her thighs together, knowing that the thong she was wearing could never hold back the wetness that was beginning to build.
"Keep going," he snapped. She opened her eyes and looked at him. She was unable to read his gaze. He sat there, feet on the floor, his thighs spread and his hand on his cock again, moving just enough to keep it fully erect. Unconsciously, she licked her lips, already feeling it inside her, and she slid the other strap down. With a sound like a snake's hiss, the teddy slid down, catching at her waist. She had lifted her arms free, and instinctively she covered her breasts with her palms.
For the first time, he made a move toward her, and she took a deep breath. But all he did was take the hemline between his thumb and index finger, and tug just enough that the gown fell, pooling around her feet, exposing the soft curve of her belly, the seductive shadow of her navel, and the diagonal creases of her thighs, sloping in to the last hidden part of her, and that only covered by the sheerest fabric imaginable. There was no way to hide her wetness now; it was thick enough in the air that they could both practically taste it, and she couldn't be entirely sure that a droplet or two weren't trickling down her inner thigh. Her hands on her breasts suddenly felt more like a caress than any protection.
For a long, silent moment, he looked at her, and she avoided meeting his eyes. It didn't matter – she could feel him as surely as if his hands were running over her body, and she responded – her nipples stiffened even further, poking between her fingers; her thighs rolled forward slightly, parting; the string of the thong seemed to ride up against the cleft of her ass, prying herself open to him in even that way.