You win

Having had time to recharge waiting on Sarah to finish of Cian Rebecca got you erect again after slobbering on your cock getting it nice and lubed up ready for her virgin asshole and it seemed like it was going to be a stamina battle this time for Rebecca. Feeling this battle of wills must have an end you wondered what the prize would be. For you right now it was just going to be getting in Rebecca's tight ass.

She guided you following in Sarah's footsteps cock first to the bedroom. Seeing Sarah on her back legs to her chest using a bottle of lube on her asshole tentatively in anticipation of Cian's rod as he jerked it trying to get it back to full mast. Rebecca layed down right next to Sarah on her back almost touching Sarah "Don't worry we'll wait for you two, loverboy do you mind" she said to you pointing at her pussy, knowing the gesture you got to your knees and started smelling her name in her pussy just like last time. Sarah frustrated with Cian told him to "hurry up with that" he took this literally with as hard as he could make his cock jumped in Sarah's ass to which she let out a great scream holding Cian's legs back "Fuck oh my god".

This turned you on so much and evidently Rebecca too as she orgasmed on your tongue "Get that cock up here big boy and shove it in just like him, dont worry I wont scream, unless you want me too". You picked yourself up watching Sarah as she tried to deal with Cian's rod not even fully in her asshole making your cock twitch with anticipation as Rebecca pulled your cock forward to her assholes entrance. "Watch that cock go in my asshole not her, I'll watch her struggle" you stared down and slowly pressed your cock in Rebecca's ass putting as much in without feeling resistance and then Rebecca slid up the rest until your cock was in up to the hilt almost making you cum straight away "Dont you dare cum yet, you've got to fuck this ass up and look your already all the way in" she giggles and looked at Cian's cock only a quarter in Sarah's ass as she was taking deep breathed trying to squeeze it in farther to no avail.

You couldn't focus on that now your attention was not cumming in Rebecca's ass until you knew she had won, so you started fucking her with slow strokes listening to the low moans of Rebecca as she welcomed you meat beating her ass up. Out of the corner of your eye you saw Sarah staring at your cock now slamming in and out of Rebecca's ass, she was biting her lip stifling moans as it seemed Cian was having no success trying to get into her ass. Cian tried pushing in again but he had gone completely soft and stepped away from Sarah cock in hand dissapointed with his failed attempt to plunder her cave of treasures. Left to watch you and Rebecca fuck he sat next to Sarah who had started to play with herself watching you two no in a fast rythem of fucking with your balls slapping Rebecca's ass.

Rebecca could see your orgasm building but gently caressed you and got you to stop "hold on to that big load loverboy I think this one needs a hole plugged and dont worry I dont mind sharing" she was staring at Sarah's asshole.