They had been on the floor at the hotel bar for almost an hour - both on business trips from different companies, both of their bodies glistening under the lights on the small crowded dance floor. The band was playing old time rock & roll. He could hardly move for watching her. Beads of sweat traced the outline of her breasts, which were neatly pushed up by a lacy black bra visible at the lip of her low cut blouse. Even when she turned away from him the sway of her ass gave him no relief. He was getting hotter and hotter, and his cock began to stiffen in his scant cotton briefs.
Then, to his horror... a slow song. She didn't hesitate to move to him and put her arms around his neck. His hands fell to the small of her back. Her breasts against his chest and the feel of her breath on his neck broke the last of his resistance to arousal and his cock stood rock hard. Thankfully, they weren't touching below, so he had not been discovered. This temporary safety ended abruptly when she changed positions and her hip came to rest on his engorged member.
"Oh!" She softly exclaimed in is ear. "That's nice..."
And instead of backing off which he had hoped for, she pulled in tighter and let the motion of her thigh rub his swollen crotch with every sway. Her body was pushing and grinding against his cock, sending wave after wave of pleasure through is body. He let out a spontaneous moan, which was answered by a hot, wet mouth on his ear. She inched him hopelessly close to a climax and then decided she was now too hot to go on with the dance.
"Let's go.", she said, leading him off the floor. "My turn."