Threesome with Professor. Part 2

While Sylvester was telling them a story about a different conference, she felt his hand grazing her back. She shivered as he moved it lightly down across her hip, keeping his movements subtle so Lauren couldn't see his arm behind her. His fingers traced the curve of her bottom, and then back up her spine. He kept telling his story, charming Lauren with his quips and ease, while Karen felt a moist spot form between her legs. It was all she could do. She wish she could push him against the bar and grind her body against his. It was a torture not to be able to fuck him at that instant.

Sylvester looked in her direction and smiled. "Would you ladies excuse me for just a second? I have to make a quick phone call, but I will be back in a minute." 

"No problem, Sylvester," Karen replied as casually as she could. "We're not going anywhere."

Karen caught Lauren, watching Sylvester in silence as he walked away. She knew she was checking him out, that she was interested. Now s