He doesn't want to

As the pressure at his puckered opening grew, Mark continued to lap up his neighbour's cum from his wife's pulsating cunt - the tastes, the sounds, the smell all combining to cause him to throw caution to the wind. He wanted this.

Having noticed a change in Mark's licking, Allie sat up, resting on her elbows to look down at him, smiling to herself dopily as she enjoyed the sensation of his tongue snaking over her folds. It took her a moment to notice Dave standing behind her husband, grinning down at her.

"Hello darling." came Dave's voice brightly, leaning back and raising his massive cock from Mark's cheeks, showing it off with a wink. "What do you think, want to see Marky boy here take it like the little bitch he is?"

Allie's eyes went wide, her gaze meeting Mark's as he looked up at her. Both stared in silence for a moment before Mark's eyes widened, and widened, his mouth opening in a silent scream as Dave slowly slid his girthy cock past his resistance and deep into his colon. Allie moaned in pleasure at the sight, a confused, bewildered sound that was partially muted for Mark by his wife's thighs clenching tightly around his head. This was all the encouragement Mark needed, eagerly resuming his licking while Dave began to slide in and out of him. It was the sound of flesh slapping that finally sent Allie over the edge, the realisation that her husband was taking the entire length of the biggest cock she'd ever had up his ass sending her to a powerful climax. Her clenching pussy pushed out a little more of Dave's load which Mark lapped up eagerly, his wife's evident pleasure only serving to enhance his own.

Soon Dave's thrusts became more and more violent until Mark was unable to properly stay in place. He moved to his hands and knees, raising himself for Dave who grabbed Mark's hips and began to truly go to town on him as Allie watched on in a daze. As he stared into his beautiful wife's eyes Mark lost himself and began to push back into the thrusts, meeting each with his own backward push, driving Dave's cock even deeper into him and further destroying his battered hole in the process.

Allie watched on in awe, the sight before her perversely erotic. She noted how different each of the men sounded, both grunting and moaning with lust and excertion, yet one, her husband sounded more like a woman, his high pitch yelps and hushed whimpers and whining reminding her of her own sexual noises. Dave on the other hand grunted and growled as he vigorously fucked her husband. These were the sounds of a real man, she realised, something Mark most certainly was not. This realisation was only further confirmed when, after a particularly violent thrust, Dave held himself inside and growled deeply, his thick, long cock pumping jet after jet of thick cum up Mark's ass. Mark let out a long, low whine as his legs started to shake under him, Allie noting that his semi-hard cock was leaking cum without having had any direct stimulation.

When Dave was done he pushed Mark off him, the lewd sloppy sound that accompanied his exit not lost on Allie. Her husband must be a broken mess back there. Mark resumed his place between Allie's thighs, returning to his licking and she in turn lay back down, closing her eyes as she let the pleasure wash over her.

Dave chuckled to himself once more as he looked down at them, slipping away quietly to leave them to sleep off their hangovers and eventually discover their transgressions. They had both clearly enjoyed themselves in the moment, but whether they would still feel that way come morning was a very different question.