Nicky's face

As much as you want to keep pounding in and out of her sweet, little, pussy, you really want to shoot your cum all over her pretty face. Pulling free from her snatch, you stand up and tell her to get on her knees. Obediently, Nicky gets down in front of you, looking at you with lust in her eyes and opening her mouth as you pump your cock in front of her. Without giving her warning, the first blast of cum launches from your dick and lands in Nicky's mouth.

Swallowing it down, she encourages you as you continue to spurt you load onto her cheek and chin. "That's it David, make me yours! Cover me with your jizz!" Hips bucking, your final few spurts fall short of her face and splatter onto her chest.

Movements slowing as the last of your cum bubbles to the tip of your cock, you watch in wonder as Nicky grabs hold of you and takes you into her mouth; licking you clean and sucking down every last drop of your salty load.

Once she's sure she's finished the job, she begins wiping the cum from her face and body with her fingers and licking them clean, locking eyes with yours the entire time. "Mmmmm, sooo good!" she purrs, putting on a show for you.

As the last of your cum disappears down her throat, you help Nicky to her feet then the two of you collapse back onto the bed together, wrapped in each other's arms. "My god Nicky, you were amazing!" you tell her. "And watching you eat my cum was so fucking hot!"

Giggling, she pushes you onto your back then climbs on top of you, straddling you and rubbing her wet bush against your pelvis. "I'm glad you liked it" she replies. "I know I did." Pinning your shoulders down with her hands, she turns serious now and stares at you. "So tell me, now that you've had us both, who's better? Me or Tia?"

Though you may be crazy enough to fuck your girlfriend's sister in their house, you're not stupid enough to fall for this trap. Reaching up, you cup her breasts in your hands, fondling them as you smile up at her. Pausing to think before you answer, you decide to attempt to talk around her question, while at the same time, trying to talk her into having sex with you again. "Jeez Nicky, I don't think I really have enough to go by to give you an answer." you say with a smirk on your face. "We've only had sex once, whereas Tia and I have been fucking each other for the past 6 months. I don't think I can give you an answer until we've fucked each other several more times, maybe dozens."

Nicky gives you a knowing grin before responding. "I think that's fair. That'll give us time to try different positions so you have an accurate comparison. We have my whole summer break to give you as much information as you need. We'll have to be careful though. If Tia finds out, I think she'll kill us both."

After resting for several more minutes, the two of you decide it would be best for you to get dressed and head home in case Nicky's mom comes home from her shopping trip. You make plans for how you can contact each other in the future and say your goodbyes. As you make your way back home, you think about the predicament you've gotten yourself in to. You realize that it's highly unlikely this will end well, but quickly come to the decision that you'll enjoy it for as long as you can.