Even back when we just married and I'm at home Dian and Tony would go together to buy car parts and it was just odd to see them having an affair since...Diane is a classy very pretty looking married woman while Tony a raggid dirty looking man. I knew him since we were k**s, he was 5 years younger than me and about a year older than Dian. Now let's go back to the present. I interrogated both Dian and Paul. There's no more denying, they have something going on between them. Finally Dian admitted. So he place the ad and here we are.I made arrangements to meet him at his house to see if this could possibility work. I had really no interest in fucking his ass, it was just something I never had the desire, to fuck a man in his ass. By no means am I gay, I enjoy women and have fucked several in their pretty asses. One in particular really loved that anal fucking, she would call it the "other hole" never saying her asshole, but I knew what she wanted and I properly gave it to her.I arrived at. I lay for a while with my legs spread, relaxed, enjoying my strange predicament. Suddenly I was abruptly surprised, as something forced it’s way into my vaginal cavity. It felt much larger than a finger! It completely filled me and instantly, savagely, began fucking me. It slid in and out in and out of my wet muffin. I was startled, still afraid to open my eyes. Nothing even remotely like this had ever happened to me before. I couldn’t even imagine myself explaining to anyone what was. Beth smiled moving her foot over rubbing it on my cock,” I sure enjoyed it”she said.”I think that it is wonderful that now we don’t have to steal away to be together”she said “ it has been years since I have felt this way”. I smiled “thank you ,I am having a lot of fun with you and find it hard not to want you every day”I said . Beth stood up and stepped behind the falling water,surprised I followed her. “This is amazing “I said seeing a large opening behind the waterfalls “isn't it”she said..