Two days ago I found out my wife of eighteen years has had an affair with a neighbour of ours for the past fourteen years. He's only just turned thirty so he was fucking my wife when he was only sixteen. If saw him you'd think nothing of him, as he's just as slim and geeky looking now as he was as a kid. But as I found out two days ago, he's got one hell of a massive cock. Which he was using to fuck my wife's arsehole on our bed. I walked in on them after being rained off from work (I'm a roofer). But I didn't stop them or even get angry.

Instead I stood and watched my wife impaling herself on his giant dick and saw her orgasm violently. It looked so horny and so right, I found myself telling him to carry on fucking her when he noticed me stood in the doorway. They both jumped up and my wife tried to make all kinds of excuses, but I only wanted to see his cock fucking my wife again. So I shouted angrilly at him to fuck her. Getting her to kneel up, he got behind my wife whilst looking at me and thrust his cock into her arse. My wife was sobbing with fright, but I didn't care, all I cared about was seeing his huge dick poking in and out of her backside.

Once he'd cum, he began to apologize and so did my wife. Telling him to leave, I sat with my naked wife on our bed as his cum oozed out of her and let her confess everything to me. That's how I now know she's had a fourteen year affair with him. To her utter surprise and mine, I got my wife to suck on my already erect cock, then I fucked her in the missionary position whilst kissing her with more passion than I'd done in along long time. Once I'd cum deep up her pussy, pulled out and lay next to her, I told her it had turned me to watch her being fucked. I also told my wife if she wanted to, she could carry on fucking our neighbour, but had to promise me she'd let me sometimes watch or join in.

That will be put to the test over the weekend, as she's just text him to invite him round. I've just fucked her arsehole and right now, she's lay on our couch with my cum leaking out of her arse. It looks so fucking horny, but not as horny as seeing our neighbour fucking her and his cum oozing out of her.