Let's see if she's ready for some anal sex?

Leaning forward, you kiss Lexi softly on the forehead then look her in the eyes and her smile grows at the display of affection towards her. "That was incredible Lexi. You have no idea how good your pussy feels and that dirty talking you were doing got me so turned on." you tell her reaching with your hand to brush a loose strand of hair from her face. "Do you think you'd be willing to let me try something else with you now?" you ask.

"Oh god David, I'm willing to try whatever you want. Everything you do just keeps making me cum over and over again." she tells you, without even asking what you had in mind.

"Are you sure Lexi? Because I want to take your anal virginity now." you tell her, letting your intentions known. With any other girl, you probably wouldn't have double-checked with her, but this is still your little cousin and you don't want to coerce her into doing something she doesn't want to.

"Yes I'm sure." she quickly replies with conviction in her voice. "I told you, I'm willing to try anything you want to. You already made me cum when you fingered my ass and I know you wouldn't do anything to hurt me David, so if you want your big... thick... cock to stretch out your innocent little cousin's tight, virgin ass, I'm going to let you do it and I'm going to love every second of it."

Holy fuck, you think to yourself. Lexi is getting dirtier and dirtier making this night better by the second and you have the thought that this is rapidly approaching one of the best sexual experiences you've had, definitely top-10 at the least. Letting yourself slip free from Lexi's pussy, you reach for the bottle of lube that had been jostled towards the edge of the bed and instruct Lexi to stay just how she is. Spreading her ass cheeks apart, you pour a liberal amount between them and onto her exposed hole then use two fingers to work it inside her. Lexi knows what to expect from before and she lets out a groan as you feel her sphincter relax nearly immediately. You take this opportunity to work a third finger alongside the other two to give her an indication of what she's about to experience and prime her ass for your increased girth and Lexi takes it like a champ, moaning out in pleasure once again.

Figuring she's probably now as ready as she's going to be, you withdraw your fingers from her ass and tell Lexi to hold her ass cheeks apart for you while you work some additional lubricant onto your cock, then you line the head up with her little, puckered hole. Your cock throbs with anticipation as you slowly begin to push inside her tight little ass.

"Hoooooo fffuuuucccckkkkk!" Lexi says, releasing all the air from her lungs as she feels you breach the tight outer ring of muscle.

Your preparation seems to have been effective though, because Lexi's body doesn't fight you and you're able to slowly start sliding your member deeper inside her. Inch by inch, you slide into Lexi, her tightness gripping you like a fist. "Fuck, Lexi," you groan out once you find half your length buried inside her. "Your tight little ass feels so fucking good.". You work to control your impulses, fighting the urge to start pounding into your little cousin's ass and check to see how she's doing. "Are you ok?" you ask her, voice tight with restraint.

"Yeah," she panted, then pushes back against you, urging you to go even deeper. "Keep going. Make me yours completely."

You can't believe the words coming out of her mouth but don't give her a second to reconsider and push yourself in further, watching as Lexi's ass swallows you whole.

"Oh David! Oh god, it's so much! It feels like you're going to split my ass apart!" she says panting, but you notice she doesn't ask you to stop and you begin working yourself in and out of her, slowly at first, then gradually increasing your pace as Lexi relaxes into it. It takes her less time than you thought it would and you're soon rocking your hips back and forth in a steady rhythm and the squeaking of your bed and Lexi's moans start growing louder once again.

You look down to take in the site of your cousin's ass as you claim her in the most taboo way possible. It's so tight, so perfect and round, and the sight of her enjoying it with the thought of you being her first, her only, is almost too much for you to handle and you soon find yourself moving faster. "Oh Lexi," you groan, your hands gripping her hips tightly. "Your ass is so perfect! You should see how good it looks getting stuffed full of my cock! I love it!"

"Fuck David, that's hot!... Tell me more!" she begged, her breathing growing more ragged by the second as she began to move with you.

"I love watching your tight ass bounce and shake as I thrust into you. How your ass feels around my cock!... You're so fuckin' tight!... Ungh fuck, I feel you squeezing me every time I shove myself back inside you!" you groan, voice strained with the effort of holding back your climax as you feel your balls tightening.

Your words seemed to unleash something in Lexi, and she begins to push against you harder. "Oh David!.. Yes, just like that!... You're gonna make me cum again!" she exclaimed as she bucked back into you, her tight asshole taking you all the way into her depths and then she cries out, releasing another wild scream as her body begins convulsing with pleasure.

You tighten your grip on her hips, unwilling to let her get away from you and holding her in place so that you can continue plunging in and out of her. You can tell you're rapidly approaching your own tipping point where you can either stop to try and prolong the action or keep going and bring yourself to completion. With the way her tight ass feels contracting around you, there's no way you're going to stop and you figure you'd given Lexi a sufficient amount of orgasms at this point to justify your own release without being selfish.

The short time it took to have that thought was enough to bring you startlingly close to cumming, as the tension had built in your balls and you could feel the pressure was nearly ready to explode "Lexi," you pant, voice strained. "I'm going to cum."