Carl stopped after she was finished. He had plans and was ready to lose control yet so he pulled out of her. Quickly and with practiced ease, he released Rebekah. Glancing at her sister, he grabbed Stacy's shorts and pulled them off with steady hands. He smiled at her shock and shook his head as he grabbed one leg and tied it down and then the other. She only started to struggle against him when he unhandcuffed her and tried to tie her arms down but it was no use; he was so much stronger than her and very very practiced at this part of the game.
Stacy was a little scared but to excited to really stop him from doing what he wanted. The way he was handling her was so stern, controlling yet tender at the same time and she didn't really want to stop him. As when he was finished, she watched them kiss and wished it was her. Stacy wanted the attention that her sister was getting and wanted to cum. He had stopped her just before her orgasm and it was driving her crazy. She couldn't touch him or herself. She had never felt so helpless in her life and that made her even hornier.
Carl watched her squirm in desire or fear he wasn't sure which but was betting it was the former. He looked at his girl and then at her sister and raised an eyebrow. She shook her head and he shrugged. He started kiss her inner thigh and working his way up he paused before getting to her pussy.
"Carl, stop, don't do this... you are my sister's boyfriend. It's wrong," Stacy stuttered out.
"Oh no I can't you were so naughty listening to us and then touching yourself. I have to punish you," He said looking at her.
"Please don't," she begged.
"Okay, I won't kiss you or touch you or fuck you if you really don't want me to but you have to make me believe you don't want it."
She looked at him, saw the intensity of his gaze and the words wouldn't come out. Stacy wanted him to touch her and kiss her and fuck her; she could say nothing.
Carl took that to mean she was willing and kissed her softly on the lips; running his fingers through her hair. He teased her pussy with the head of his cock, not going in just rubbing it along her lips and clit. As she moaned he looked at her sister who was busy playing with herself watching the scene unfold before her. Carl motioned her closer as he pushed his head inside her, just a bit and pulled back out.