Cate smiles, "Tell me, did I interrupt something up there?"
Kieran sighs, "Kind of..?"
"Yes." Grace surprises herself with her own honesty. She is having trouble thinking straight with his pointer finger probing her vagina. She can feel her pre-cum lubing up his finger and is trying hard to hold back her moans.
"Oh, I am so sorry. You can go back upstairs and finish if you want."
"Mom, it's okay."
Grace is about to object that it is not okay, and that she definitely does want to go upstairs when Kieran's finger slides in up to his knuckle and she cannot help but gasp. She tries to play it off but it's too late.
Cate raises her eyebrows, "Since you're already started, why don't you just finish it here? It could be like one of our old coaching sessions."
"Yes!" Grace moans.
Kieran pauses his fingering and looks down at her, "Are you sure? We really can go upstairs Cate won't care."
"No, I think it would be good to do it here. It would go right along with what we've been doing with the Nudist Project, and it might be good to get advice from someone as experienced as a Porn star. Please? Will you fuck me right here in front of your stepmom?" She whispers the last bit in his here where Cate can't hear.
Kieran blushes and kisses her forehead, "Yes, of course."
Grace looks over at Cate, "We'll stay here."
"Good! Take that blanket off and let me see."
Kieran pulls the blanket away and Grace's soaked pussy is revealed.
Cate grins, "Wow."
Kieran's hand slides down over her pelvic bone and rests on her pussy. He slides his fingers back inside her welcoming hole and she groans with pleasure. He finds her g-spot and rubs it repeatedly causing her to squirm in his arms. Her pussy tightens around his finger and she leans her head back to kiss him as the orgasm overwhelms her body. He pulls his fingers out and Grace gasps as a little bit of squirt comes flying out of her.
"Fuck." she groans into his neck.
Kieran kisses her but lets her stand up. He slides his pants off and his cock stands tall in all its seven and a half inches of glory. Grace gets on her knees in front of him and he sits on the edge of the sofa. Grace's wet mouth slips around the tip of his cock and she starts to bob her head. He repeatedly feels the back of her throat and she gags a little.
She pulls off of him, "See, like, I can't go any deeper. I want him in my throat!" She looks to Cate for help.
"All right, don't worry. Try laying on your back, Kieran you'll stand and fuck her face as if in missionary, but with her head. Understand?"
Grace nods and lays on the couch with Kieran's cock right in front of her face. She opens her mouth and he slides in. Her tongue protects him from her teeth and acts as the perfect guide as he thrusts deep into her tight throat. He's so deep that his balls press against the bridge of her nose. He pulls out and she laughs, "I did it!"
She's about to say something else but Kieran shuts her up by opening her mouth and pushing his cock back in. She arches her back but then relaxes as he starts to slowly fuck her throat.
He pulls out, "Ready?"
She nods and opens her mouth again. He pushes deeper than before, leans over her body, and starts pinching and twisting nipples. He can see the bulge of his cock in her throat and it's so fucking hot. He pulls out and she coughs but grins at him. She sits up and they kiss roughly.
"Good." Cate says. "Now, fuck her."
Grace pulls away, "Wait, I- umm... Can we do something new?"
"Anything, what did you have in mind?" Kieran puts a hand on her arm.
"Well, I have always wanted to... and since Cate is here to help... Can you fuck my asshole?"
"Grace, I will fuck you however you want me to. But yeah, I haven't done that either. Mom? Will you show us?"
Cate giggles and smiles, "Yes!! I have been waiting for the day you would ask me that. Let me go grab my lube."
Cate gets off the couch and runs upstairs. Kieran lays Grace down on her back and slaps his cock teasingly on her pussy; the wet slaps turn them on even more. Grace kneads her breasts as Kieran presses his cock against her ass, not hard enough to go in, but enough to make her moan at the new feeling.
Cate comes running back downstairs, but both Kieran and Grace just stare at her. While she was upstairs, she stripped fully naked.
"What?" she says. "I can't have fun too?"
Grace smiles, "of course!"
Cate takes some of the lube and gently rubs it onto Grace's asshole, then puts more on her hand and rubs it into Kieran's cock.
"Alright, now just go slowly, if you want him to stop just say stop."
Kieran guides his cock to her asshole and presses against it. "Relax, baby." Grace lets some of the tension go and relaxes enough for him to slide the tip into her. She gasps but doeest stop him. Cate sits on the couch next to Grace and rubs her pussy. It's quite obvious form her immaculate body why she's ranked number 1 on Pornhub at the moment. Kieran takes Grace's hand and lets her squeeze him as he pushes his cock halfway inside of her asshole. Grace moans and squirms, her pussy contracting from the unusual pleasure.
"Are you okay?" he asks.
She nods, "Keep going."
He pushes in deeper, and Grace lets out a loud moan. She nods and he slides his cock fully inside her. Her asshole spams around his hard shaft and she breathes heavily.
"Good! Now let her adjust." Cate says.
Kieran lets his length rest inside her while Grace calms down and her asshole adjusts to his size. Once he knows she's ready he starts to thrust slowly. She bites her lips and enjoys the feeling of him sliding in and out of her, but she doesn't know why he's going so slow.
"Faster, Kieran."
He obliges, beginning to pick up the pace. His cock slams in and out of her and she starts to moan louder. Cate has moved so that her pussy is right next to Grace's face and she's touching herself. Grace tilts her head and lets her tongue lap up Cate's juices. Kieran's finger rubs Grace's clit rapidly as he destroys her ass. Grace moans with every thrust and it's not long before she's repeating the phrase: "Don't stop, don't stop!"
She meets Kieran's eyes and moans his name, "I'm going to cum all over your big cock."
Kieran moans as her ass tightens and spasms as the orgasm washes over her body. She squirts and her cum drenches his cock and abs. Grace arches her back and groans as pleasure erupts from her pussy and ass. It's the best orgasm she's ever had. Kieran pulls out of her and picks her up in his arms. She wraps her legs around him and her arms around his neck. With her face buried in his neck he holds her there as she comes down from the orgasm high. He can see Cate sitting on the couch smiling and nodding at him. Cate always complains to him that during her porn scenes the guy never has any real emotional connection with her, obviously, and when she does orgasm, she has no time to enjoy it. Cate stands and gives him a little wave before leaving them alone and going upstairs. She's done her job, and the rest is up to Kieran.
Grace whispers in his ear, "Am I your good girl?"
"Always."
Kieran sits down on the couch, Grace straddling him. They kiss as she strokes his hard cock.
"I'm going to ride you until you fill up my tight pussy. Is that what you want?"
He nods. Grace giggles a little and pushes him so that he's lying on his back on the couch. She gets on top of him and guides his cock into her soaked pussy. It slides all the way in, and he moans. One of her hands presses on his chest and the other she puts on his cheek. He shudders as she starts to ride him, she couldn't possibly understand how good her pussy feels. The wetness of her, the perfect amount of tightness, and the pressure on the very tip of his cock when she presses herself further down and he reaches her cervix. A sheen of sweat coats their bodies and Grace's nipples are rock hard. Every time he moans her name she gets more and more turned on. She can feel his twitching inside of her, ready to burst, but she doesn't stop. He's breathing heavily and moans every time she bounces on him.
"Come on baby, I know you want to."
"Kiss me." He moans.
She leans down and kisses him as his hands move to her ass. He guides her up and down faster until he can't take it anymore. He moans into her mouth and holds her ass down as he explodes inside her. Cum shoots from his cock and she shudders from the feeling. Grace sits up and lets his cock flop out of her. Sticky hot cum drips out of her pussy.
She giggles, "That's so hot."
He wipes her off with the towel Cate left, and she lets him carry up back upstairs. She doesn't resist as he sets her down in bed and "Accidentally" lets his fingers brush over her clit and up her body. He holds her tightly and turns off the lamp. Their nakedness brings them closer together than ever before and Grace closes her eyes.
"I love you." Kieran says softly.
"What?" Grace opens her eyes.
"Sorry."
"No, no." she takes his face in her hands. "Say it again."
"I love you?" He meets her eyes.
She kisses him for a long time before pulling away and looking at him again. "I love you." She says.
Kieran lets her bury her face in his neck and they drift off to sleep together.