7-9 - She cums, you don't

Kylie slides down on to your cock, moaning as takes your full length. "You've got the size, but do you have the endurance?"

You smile and thrust hard up into her. She moans in pleasure "Do you?" You mock. Staring into your eyes Kylie wraps her arms around your shoulder and begins riding you hard and fast. It's obvious to you, Kylie has taken your words as a challenge. Not one to back down you begin humping rhythmically.

Next to you Jenny begins softly moaning, two fingers digging deep into her pink, wet, cunt as she watches intently.

It takes all of your willpower and focus not to empty your balls into your cousin's tight pussy. But Kylie's soft moans have turned to grunts and pleased squeals, revealing that she's also approaching her limit. Recalling a conversation with Kylie you decide to take a chance. Leaning in you gently bite the Kylie's ear lobe. The effect is instantaneous. Kylie shrieks, skewering herself on your cock and throwing her head back. Her pussy rapidly tightens and then releases you. You thrust desperately into her, seconds from cumming, but she quickly hops off of you. Instinctively you try to finish yourself off, but with your hands cuffed behind your back there's nothing you can do.

*Mark XP 2 total*

Kylie smiles wickedly. "Looks like you won."

"Please." You beg, exposed cock throbbing visibly.

"Poor baby." She says, running a hand through your hair. "Unfortunately I have an errand to run." She gestures towards Jenny. "But don't worry. Jenny looks ready for some fun."

Turning your attention to Jenny, she is staring at your member, rubbing her clit.