Try to persuade her to enjoy it

"Jane, it's ok," you say, walking over to her and stoking her hair. "I'm here. I'm with you. It's all right. You can enjoy this. Relax, let him fuck you. Go with the flow. It's ok."

"Uh - no, it's wrong, UH" she replies.

"No, Jane, it's ok. Everything's fine. Just chill."

"Uuuh, no. No. No, uh, fuck!"

The stranger ignores your conversation and continues to fuck your wife, his pace now pretty fast, his cock pumping rapidly in and out of her pussy. He begins to grunt with the effort and the pleasure.

"Uh, uh, uh," says Jane, struggling to find any words at now, "uh, mmm, mmmm, oh, mmmmmm, yes" she whimpers, her hands finally resting on your neighbour's back instead of pushing him away. "I mean, no, I mean----uhhh, ohh, uh, yes, mmmmnnn, oooohhhh..." her hands now find his arse and instead of pushing him away from her, she is grabbing his butt and pulling him in with every thrust.

"That's it, honey," you say, your trousers and pants now around your ankles as you stroke your own erect cock while watching the spectacle. "Feel that lovely hard cock inside you. Let him fuck you. Let him fuck you."

"Uuuh, yes! Yes, deeper! Oooff! Fuck! Yes, fuck me! Fuck, fuck, fuck" she says her pussy is pounded by this total stranger. Jane's eyes suddenly lock onto yours as you watch her being ravaged and enjoying it. You smile at her, and suddenly her own face lights up in a beaming smile as she realises she's enjoying this and it's ok.

"Ah, oh, yes!" she says, her eyes still on you. Her tongue darts around her lips, and then she leans forward to kiss her molester full on the lips, their tongues evidently playing with each other while he fucks her harder and faster.

"Mmmmmm, yes, I'm going to cum," she shouts.

"Uh, yeah, uh fuck, so am I," pants your neighbour. A look of shock registers on Jane's face.

"Oh, uh, not inside me, not inside me!" she pleads, while still heading towards climax.

"Uh, ah, one thing, uh, you need to learn, ah," replies the man, "is that free use means - ah - I - call - the shots, uh, aaaaaaaahhhhhhh!" And with this last syllable, your wife moaning in pleasure at the same time, their bodies finally stop pumping at each other. Jane's hands remain clamped on his arse cheeks as their bodies quiver and you can tell his cock is twitching inside her, having buried his load deep within her pussy. Finally they relax.

"But... but I'm not on the pill. You didn't use a condom," says Jane.

"Free use is free use," replies the neighbour, and withdraws his softening cock from her cunt, a small pool of white cum gathering at her pussy lips and dribbling down towards her arse, "and we've only just started. Now, you just be a nice cum-slut for all the men you meet, and maybe tomorrow I'll fuck you in the arse and we'll see if I can make you pregnant that way too, shall we?"

He turns and looks at you with a grin. "Nice bit of pussy you've got there, mate, she's all right when she gets going, isn't she?" he says. "Now make sure you go and get yourself some horny sluts bouncing on your cock, 'cos you don't want wifey here having all the fun do you? I can guarantee there'll be plenty of guys having their way with her.