Tell Carrie to take the lead, you just want to hear her tell you what happens.

"I trust you babe. Go make it happen and come tell me all about it afterwards. Go fuck him and come back to tell me every perverted detail of how David used my perfect slut of a girlfriend."

"Anything you want sweetheart," she said, leaning down to give you a kiss, but stopping as she remembered her promise earlier to not show you any affection until she was through with David. She stood back up, licking her lips and no doubt thinking about how she wanted to go about making it happen with David.

This was the best option really, how else could it work after all? You didn't want David to know you were encouraging this, so it's not like you could stand in a corner and just watch them fuck. Listening in on them sounded hot, but you'd be too tempted to burst in and watch, so letting her take the reigns just made sense. Carrie would go and give David the thrill of his life, then come back to tell you all about it while you fucked her. It was the perfect arrangement.

Your attention returned to Carrie as she turned away from you and walked towards the door.

"Enjoy picturing me getting fucked by David!" she chirped as she left the room.

Within seconds of Carrie shutting the door behind her, your hand was wrapped around your cock and fervently stroking. Images in your head of your girlfriend on her knees sucking David's cock. Of her lowering her tight soaked pussy onto his dick to ride him. Of your roommate pounding her ass just as you'd done an hour earlier.

Already about to cum a minute later, you scrambled to find something to cum on and not make a mess. You grabbed Carrie's panties and unloaded into them, a strange reversal of things as David had joked about cumming in her panties once or twice before, and instead here you were doing it as your lucky roommate was about to fuck her.

After the intense orgasm you collapsed back into bed, naked and satisfied, thinking of what all could be happening between Carrie and David just down the hall. At some point you must have dozed off though, falling asleep naked in bed as your girlfriend worked her magic on your roommate.

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