My girlfriend's sister wants to play just the tip [M25F20][Cheating][Big dick][Male POV][PornGoesText]

Lana kisses me goodbye, heading off to her new job with the promise of celebrating when she gets back. I was strictly ordered to make myself at home, and not to bother her younger sister/roommate Jess, which was fine by me. I hardly know Jess except in passing.

I kick back on the bed and start scrolling my phone, doomscrolling since I had nothing better to do. The room still smells like sex from the night's previous round, distracting my thoughts a bit.

I switch from random memes and posts over to a porn site. My cock grows harder as I jump from video to video, trying to find the one I'm most in the mood for. I strain in my pajama pants and decid to slide them off enough to free myself.

My cock springs to life and I grip it tight, slowly stroking as I continue to scroll through videos, not finding anything that stood out, but now needing a release even more.

My dick throbs in my fist as the door suddenly springs open.

"Hey, Lana, can I–" Jess said as she blindly walks in, cut off when she brings her focus to the room. Her eyes widen at the size of my cock, of my grip on it. It takes her a second to avert her eyes.

"Holy shit, I am so, so sorry. I didn't know you were here."

I cover myself up, pitching a tent in the comforter, "Lana starts her new job today."

Her cheeks flush and she keeps looking away, "Right, right. I'm so sorry."

"Hey, it's okay," I said. "I covered up. It's all good."

She turns her eyes back to me slowly, relaxing a bit. She stands awkwardly for a moment, gears turning in her head.

"You okay, Jess?"

She regains her focus, "Yeah, sorry. I just...I haven't seen one that big in, you know, real life." She stares off blankly at the pitch in the comforter.

I laugh, "I mean, do you want a closer look?"

She absentmindedly nods before shaking her head, "No, I mean. You're dating my sister." She keeps staring despite her protests, biting her bottom lip.

I stare at her and slowly start sliding the blanket from my lap. As it reaches the edge of the cover, her breath hitches in antocipation. My cock springs out from under its confines.

Jess takes a step towards me, her eyes focused. I flex myself, causing it to bounce slightly for her.

"Holy shit," she whispers. "How does that even fit my sister?"

I chuckl, "It took some time, but we got there."

She has reached the edge of the bed, staring at my manhood, shifting on her feet, "Can I touch it?"

She starts to backtrack, realizing what she said but I grabb her hand and bring it toward my crotch. Her hand opens and she wraps her fingers around me, not able to touch her thumb.

"Fuck, its so meaty and warm," she whispers to herself. She slides onto the bed, on her knees and adds her other hand, slowly stroking and rolling her palms around it.

I let out a soft moan that snaps her back to reality.

"Shit, shit, shit. I shouldn't be doing this. You're Lana's boyfriend."

"You're just touching it," I say, calmly. "It's okay."

She nods, grasping onto any excuse to keep going. She leans over it and spits on the tip, using her hands to apply it over me.

I throb in her grip, "Fuck, Jess. Just like that."

She moans at the praise and keeps up her pace. She licks the tip a few times but keeps up on the hand job.

"You want to feel how it can stretch you?" I ask.

She stops pumping her hands and stares at me, rolling over her options behind those amber eyes, "I mean, I shouldn't. That's cheating. That's betrayal. Plus, I don't even know if it'll fit."

She pumps it some more, thinking. I moan and flex in her grasp.

"Maybe just the tip...it's not cheating right? If it's just the tip?" she asks.

"Sure, just the tip," I reply, a gravel to my voice.

Jess lays back on the bed, quickly pulling her shorts off, revealing her glistening cunt to me. I reach out and rub her clit with my thumb, toying her opening with my fingers.

"You're absolutely soaked," I say with a laugh.

She moans as I keep adding pressure to her and nods at me, "I just...I kept imagining how that huge cock would fit in me."

"Well, let's find out."

"Just the tip."

I line myself up with her opening, my enlarged head filling the space with ease. She moans and I can feel her starting to grip before I even push in.

Her pussy stretches around me and she screams loudly as I continue in. I can feel her trying to relax and grip as she takes me just a little more.

As my tip finally plugs her completely, I look down at her, "There you go, just this tip."

She looks up at me, cheeks flushed. I feel her grip around my head over and over, her body moving around with need.

"Move it," she demands with a husky moan.

I slowly moved my head back and forth inside her. Her breathing quickened, her moans turned into a whimper. I feel her gripping me before she lets out a frustrating growl.

"It's not enough!" she yells. Before I react, her legs wrap around my waist and she pulls me inside. My cock buries deep inside her with one thrust and her back arches, a stifled scream coming from her mouth.

"Shit, Jess. You okay?"

Her face is pained before I feel her grip around me, "Fuck that hurt." She opens her eyes and looks at me with lidded eyes, "Now make it feel better."

Her legs still wrapped around me, I grasp her waist on both sides and start thrusting in and out if her. Her pain melts away as her moaning comes back. She whimpers and groans with each thrust, my cock stretching her out over and over.

"Fuck, I can feel you...taking over...every inch," she screams as I bottom her out, picking up my pace.

"God, you take big cock like a pro, Jess."

She moans in response to the praise, her heels digging into me. Her body tenses up and she comes undone on my cock.

"That's right, Jess. Come all over that big dick."

"It feels so good to cone for you. Fuck. I'm getting fucked by my sister's boyfriend."

I bring her legs off my waist and over my sholders, bending her partially as I fuck her faster.

Her moans and words turn into babbling as I wear her in, her grip relaxing after her orgasm.

"Yesyesyes. Fuck me!"

I happily oblige, hitting her as fast and as deep as I can. She moans and her bacj arches again. I can't hold back as her cunt grips me in ecstasy and as I push into her deeply again, I unleash myself into her.

Her voice catches and her eyes widen, staring at me. My load combines with her own orgasm, and her entire body shakes around me. I hold myself there until I finish, then slowly remove myself from my girlfriend's little sister.

Jess' body relaxes as she spread out over the bed, my cum leaking from her reddened opening. She drags her fingers along her hipbone.

"Fuck," she said breathlessly, "How does Lana do that everyday."

I smirk, my own chest heaving from the workout, "You know, she was going to ask you if I could move in with you guys."

Jess bites her lip and she meets my eyes again, "Well how could I turn down such a convincing argument?"