10+ You fuck her in the ass and she likes it

What man would turn down such an amazing opportunity? Sophia seems so nervous about your answer, so you decide to mess with her a bit.

"Hmm, I could but what would be in it for me? Besides the dubiously consensual sex with your friend."

Sophia looks down as she thinks about your words. Having come to a decision, she looks up and says, "When you're done with her, I'll let you fuck me."

Two more girls! And these ones you actually get to fuck!

With a smirk, you hold out your hand saying, "Sounds like a deal to me." She smirks back as she shakes your hand.

As she leads you through the large house to wherever her bedroom must be, she explains, "I want you to try not to say anything. Don't let her know who you are. I'll be so hot that she thinks I'm fucking her with a strap-on but it's actually a stranger."

This girl has some wild fantasies, but since you're benefiting from them you aren't going to say anything. When you finally arrive, Sophia puts a finger in front of her lips indicating 'quiet' and gives you a wink as she opens up the door. The room is very large, with the king sized bed being the obvious center piece. It's made with rich, dark wood on the head and foot board, with those posts that extend toward the ceiling so you can put curtains on them. There is a dark red blanket, with a pale woman laying on top of it. Her chest is heaving and her arms and legs are bound, leaving her in spread eagle. She has a flush that extends from her face to her shoulders and the same long raven hair as Sophia. The blush goes well with the red mask covering the woman's eyes. Taking in the scene, you make quick work of your clothing. You're about to approach the bed when Sophia, who has lost the night gown and is now simply clad in red silk panties, hands your a jar of warmed lube. How considerate!

Smiling, you take the warm lube and reach the bed. You know the obvious target, but how many chances will you get in your life to fuck a girl in the ass? Leaning over the large bed, you swirl a finger in the lube before rubbing it on the outside of her rosebud. The woman jumps a little at the touch, but doesn't otherwise react. It doesn't take much **** to push the finger in, and you begin sawing it in and out as you glance over at Sophia. She is eating a slice of pizza and rubbing a vibrating egg along the inside of her thighs while lying on a light brown couch. Seeing your gaze, she nods encouragingly to keep going.

Smiling, you soon work your way up to two fingers, and then three. By now, the woman is gently pulling at her bindings in her squirming and breathing very shallowly. You lube up your cock and glance at Sophia, who is doing the same thing to a dildo. You smile at the scene before lining up your cock and pushing in. You're going slow, but as soon as you start pushing in the woman begins talking, "hmmm, ohhh, Sophia! Oh my god it's so warm."

You keep pushing in, slow but steady, and the woman continues, "Ohh, it feels so good Sophia. Fuck me. Fuck your little sister Sophia. Fuck your sister's ass. Oh, oh, Ohhhhhh."

As you bottom out, the woman (Sophia's sister apparently) cums. Her tunnel tightens around you and you hold yourself still as she gently thrashes. You look at Sophia, who is biting her lip as she works the dildo in her pussy, apparently unconcerned with what you heard.