Sabrina moaned as she came but felt the loss of Ken's cock, which she really normally enjoyed when she came, but peering over Luna's body she saw Ken was coming all over her pussy, stomach and the rest of her body hard.
Sabrina checked to be sure that the potion was still working after she gathered her wits about herself. "It was to make him stay nice and hard so he can do that to all of us again and again," she explained to Luna.
She grinned at Ken, she still wanted to see him fuck Luna wildly. She smiled over at him, giving Luna a little nudge towards Ken, "she wants me to share you, and I hate denying my little sister anything, so I would have to say yes." She rubbed Luna's tummy and then plunged a finger down and rubbed his come into her pussy, whispering in her ear, "go to him, make him come inside you like that, it feels wonderful."