She believes you

Vivien holds your chin, looking you deep in the eyes, before turning back to Olivia.

"Though I'm usually a supporter of believing other women, I've faked enough orgasms in my day to know one when I hear it." Vivien says.

You glance over at Olivia, pleased by your victory as you watch her give a sheepish grin along with a light shoulder shrug.

"I guess you got me." She says. "Was just trying to help Dan here out." She gives Dan a gentle pat on the head.

"I'm sure Dear." Vivien says, clearly not buying it.

Vivien pushes you back slightly allowing her to stand up.

"I hope you all will excuse me for a moment." Vivien says before stepping out of the room.

"You really couldn't just keep your mouth shut?" Olivia scolds you in a hushed tone.

"You were trying to get Dan to fuck me in the ass!" You snap back.

Dan remains still, not visibly reacting to your conversation.

"Oh please! You would have loved it." She says.

You're about to respond but pause as Vivien reenters the room. To your surprise you immediately notice that she is now naked, the only exception is the large strap on dildo around her waist. You look on at it wide eyed, enough to alert Olivia that something is going on, causing her to turn and look as well, the shock on her face is clear all though she tries to hide it.

"Vivien! looking good." She says eyeing the fake veiny member.

"Glad you like it Dear." Vivien says cheerfully. "Do me a favor and take those cloths off."

"What?" Olivia's shock is no longer hidable.

"It would help if they were out of the way." Vivien says casually. "Then you can get on all fours."

You can hardly contain your excitement as you see the confused horror on Olivia's face.

"Vivien, I don't know..." Olivia begins to protest.

"Now now, you can't expect to lie and cheat in my home and expect there not to be any repercussions, can you?" Vivien asks, giving her member a playful shake.

"Come on Olivia! You don't want to be rude." You say smugly.

"Oh, don't be too excited." Vivien says turning her head in your direction. "I'm not a fan of tattling either."

Both you and Olivia stare at each other with a mix of revengeful joy and concern as you wait to see what Vivien has planned.