He had a serious erection looking at Mandy and I got an idea."Oh no! You are not explaining anything to me-"Dad? How many time do you fuck mom in a we...k? Once?" I asked him and the question threw him by surprise. He was really mad now and that was just what I wanted. "I remember when I was a k**...I used to hear lot of noises from your room...I didn't know back then what you guys were doing but now I do...you were having sex...and lots of sex." What the fuck are you trying to say?". We were both moaning and groaning. He started to move faster and faster, and he rubbed my clit for me. I could feel his balls slap against me, and I thought to myself that sex had never felt this good before. His face tightened up, and I knew he was going to cum. He was holding back for me though, because he wanted me to finish first. I felt myself tighten up once again, and was barely able to say, Ben, Im going to cum. My words were our undoing. We simultaneously came moaning each others names. This was heaven."Do him good, Donna, I think it's probably his first blowjob."Oh, she was doing me good, all right. She was doing me fabulous as I stiffened, my back arched into her and I began spurting my cum onto her mouth. She never slowed down a bit, just kept sucking, it did feel good, I thought that maybe after I'd cummed that it wouldn't feel as good but it did.As her sister rubbed my chest, Donna continued to suck on my cock, taking it all the way in her mouth, licking over the tip,. Mom, well, she didn’t take long to follow suit. What else to do? You’re her husband and she loves being your wife, even after all these years. I don’t think that you’ll ever know how crushing it was for her when you filed for divorce. She knew why you did it, but damn was she heartbroken! Right, Mom?” Amy told me while starting the shower for the three of us to share.“Damn straight I was! I don’t mind telling you that the worst part was that it was all my fault and I knew it. I fought my nature.