You wake up to a similar situation

You wake up to moaning and grunting. Next to you on the bed, Carolyn is riding John for all he's worth. You sit up and watch, and Carolyn sees you're awake.

"He said 'yes'! John said 'yes'!" Carolyn exclaims as she has a big climax.

John looks at you with a big grin. You're hard, so you get up behind her.

"Fuck her ass, Jack. Fuck our little slut's ass," John says.

He said 'our', you think. You spit on your cock and push at her ass hole.

"Yes!" she screams.

Then her sphincter relaxes and you slip inside her butt. Carolyn is still coming, so her pucker squeezes you rapidly. You pound into her at the same pace that John is reaming her pussy. You can feel his cock inside her on every stroke. John leans up and shoves her tits together, sucking on both nipples at the same time. Carolyn is just shaking and shouting -- her orgasm won't stop. You and your best friend are banging this hot Asian cheerleader just as hard as you two can, and she's taking every bit of it.

John releases her tits and leans back groaning louder than ever. You can feel his cock jerking inside Carolyn, and you can't hold back. Your load shoots deep into her bowels and you roar over Carolyn's back. The three of you shudder through for a minute, until Carolyn slumps on top of John, which pulls her off of you.

You look down and see cum dribbling out of her ass and cunt and sliding onto John's body. Your cock is dripping. You and John have been fucking Carolyn all night long, and you still want her. Hey, I'm in a relationship with a slut, you think. And my best friend. You smile.