"I really need to cum,"

you say to Heather. The admission causing your already racing pulse to increase in tempo.

“And you thought you’d just come in here and your big sister would what? Stroke you off?” Heather practically purrs next to you. As she speaks, she presses herself against you even closer so that she has half slithered onto your chest, one hand low, between you, and running up the inside of your thigh.

“I’m just so horny,” you complain.

“Well, I suppose I did have something to do with that. I was such a tease to you at dinner. It's just that when I saw you come home with such a boner, I couldn’t help myself,” Heather tells you with a giggle, fully aware of everything she was up to.

You hips buck clear off the bed as Heather brings her hand to rest over the tented bulge of your boxers. You moan and gasp as she wraps her palm around your stiffness.

“All this just for me?” Heather whispers, your breathy voice against your neck sending your hair follicles standing on their end.

“Ahh huh,” you nod back unable to speak at that moment.

“Rebecca’s a lucky girl. You must have really broken her apart with this thing,” Heather tells you as her hand makes it way into your boxers and wraps warmly around the base of your cock, stroking your shaft slowly.

“We didn’t,” you confess at last. Heather’s gentle but firm hand job drawing the truth from you.

“So, what did you lovers get up to then?” she asks. You begin to get the suspicion that hearing what you and Rebecca did might be working to get Heather more aroused.

“Becca sucked my cock,” you tell her, your words a bit firmer as you grow in confidence.

“Really? Just like this?” Heather asks as her head disappears under the bed sheets, moving lower.

You let out another groan as you feel your boxers pulled open before Heather’s lips wrap themselves around the head of your cock. Your sister taking your long hard shaft into her mouth and starting to blow you in her bed. The steady state of arousal you’ve been in all evening doesn’t leave you a lot of time to enjoy your sisters sucking mouth before you feel your orgasm about to come.

Caught up the moment you run a hand down Heather back, the smooth material of her nightie flowing underneath your fingers. From the angle she’s in, half turned to be able to suck your cock, you easy slide your hand up under her nightdress and feel between her legs. Your first sensation is one of warmth and hotness, then moisture as Heather guides your fingers to her pussy. You make contact with her sticky snatch as she rubs your hand against her lips in slow circles.

It's too much for you. Heather's hot pussy in your hand and her mouth around your dick. You cum at the same time as you slide a finger into your sister’s pussy. You seed ejaculating into Heather’s mouth as you thrust your finger all the way inside her to the knuckle. You moan and thrust against her face as you cum, your sister not taking her mouth from your cock as she takes each pulse of cum in her mouth swallowing each time you fill her cheeks. You finger Heather’s pussy in time with your contractions, her chamber awash with lubrication.

After several big mouthfuls of spunk, Heather makes her way back to you from beneath the blanket, the movement of her body causing your digit to slip from inside her.