Rest? Nah!

Cassie's hand goes straight for her sister's cunt, stroking it and sliding her fingers inside. You take Karen's face in your hands as you lean in for a deep kiss, tongues cavorting with each other. You put your hand on her breast, and you squeeze and jiggle it. Karen moans into your mouth when you roll her nipples between your fingers.

Karen is getting really worked up again. Then she growls, “I thought we were going to take a break, but that can wait. I want to ride you until I scream, John.” Then she sits up and urges you to get in the middle. You roll inward, grinning up at your girlfriend’s sister. Cassie strokes your cock a couple times before Karen fiddles the tip inside her dripping faucet of a pussy. Then she slams down, taking your full length in one stroke. She wails as she comes just from penetration.

“Oh, this is the best payment I’ve ever received. Your cock is a Six Flags amusement park,” Karen says as she starts rising and falling on your thick shaft.

You grip her hips, helping her establish a rhythm as she rides you with increasing fervor. The bed creaks beneath you, punctuating her passionate moans. Karen throws her head back, exposing the elegant curve of her neck, as she works herself up and down your shaft.

Cassie watches with hungry eyes, her hand moving between her own thighs as she enjoys the show. "God, you two look incredible together," she whispers, her voice thick with desire.

Karen slows her pace, rolling her hips in tight circles that make you groan. "I want to make this last," she pants. "Your cock feels too good to rush."

You reach up to cup her breasts, thumbing her hardened nipples. Karen shudders, her inner walls clenching around you. She leans forward, bracing herself on your chest, changing the angle of penetration. The new position allows you to thrust upward, meeting her downward movements.

"Harder," Karen demands, her hair falling around your face like a curtain. "I want to feel you tomorrow."

You comply, driving into her with renewed vigor. Cassie moves closer, her hand replacing yours on Karen's breast, pinching and tugging at her nipple. The dual sensation makes Karen cry out, her pace becoming erratic.

"I'm close," she gasps, her movements growing more desperate. "So fucking close!"

Cassie whispers something in her sister's ear, something you can't quite catch, but it pushes Karen over the edge. She screams your name as she climaxes, her pussy gripping you like a vise. The sensation is too much—you explode inside her, filling her with your seed as she continues to ride out her own orgasm.

Karen collapses on top of you, both of you breathing heavily. You feel her heart racing against your chest. Cassie lies beside you both, stroking her sister's back tenderly.

"Best payment ever," Karen murmurs against your neck, making you laugh despite your exhaustion.