I honestly could not believe I had just done what I had done. I had just had the most intense, powerful and longest orgasm of my life, and I had it wi...th my stepson’s fist inside me and his lips and tongue on my clitoris. I could not believe I had allowed this to happen.“Oh, baby, I am so, so very sorry,” I sobbed, as tears began to flow uncontrollably. “I never meant for anything like this to happen. I promise, it will never happen again.” I was crying hysterically now. My chest was heaving up. I couldn’t figure it out yet from the clues I’d been given. I moved over her and slid my prick inside her. Oh fuck, she was tight! I settled in to stroking, varying my speed and force and the depth of my strokes every few minutes in reaction to subtle cues and vocal requests from her. She was thrusting up, seemingly enjoying the action. “My God! How long can you last?” She exclaimed, after we’d fucked for about thirty minutes. I told her, “Ask me that again while we watch the sun rise,. The wall is enormous, but it looks like so much fun. I let Scott start, so I can get an idea on how it is done. There are three other people rock climbing at the same time and I don’t want to look like a sissy or a girly girl. It isn't long before I start to attempt to climb up also. Scott is encouraging and helpful as I begin my way up. I can feel my heart pounding and feel the rush of being able to do it. I always love trying to do something new. The other people are watching me also, after. Okay?" I nodded slightly and looked up at him, waiting. He smiled at me softly and gave me a soft kiss on my lips. It made me feel much better. He pulled my chaps away and sat back against a tree, pulling me in between his legs, leaning my back against his chest as he kissed the top of my head softly and started telling me the rules... "Rule one... If we do anything, we have to make sure not to get you pregnant." I nodded, knowing that would be very wise. "Rule two... We have to tell him.