Threesome with Professor. Part 3

But she knew he wouldn't. He would tease her with watching, with his slow and patient seduction. He would make her agonize.

Lauren was licking and sucking his finger more passionately now. She knew she wanted more. She was grinding her pussy against Sylvester's waist as he pulled her closer. Karen ran her fingers through Lauren's hair, pulling her hair slightly so she would arch her back for her. 

Karen could see the outline of her hard nipples poking through her blouse, and she was dying to touch her. Slowly, she crept behind her on the bed, straddling her as she sat down, sliding her legs around the outside of hers. Her back was pressed against her full breasts, and her mouth was hot against her ear. karen leaned back against her as she whispered, "you look so sexy right now, Lauren..." then reached around her sides and started to slowly unbutton her blouse.

Sylvester's fingers was matching her button for button. She undid the clasp of her pretty white bra and they