I kept going and after a while, I felt his cock grow again. I looked up and Mark had let his headrest back on the sofa, clearly enjoying what I was do...ng.I just kept going and going, rhythmically working the head of his cock in and out of my mouth, too afraid to let my lips go from his cock."Good girl, good stuff. Now, try twisting both your hands a bit and move that mouth in the opposite direction. Yes, like that."He leaned back again and let me go on for a while. Every other moment, I let a. “No, here is nice.” I muttered. Beth sighed and I could feel the tension dissipating. We looked out over the lake. It was a warm night, not as much moonlight as would be nice, but still a lovely calm summer night.“I can understand this is always off-limits at parties, what with your parents being scared someone will drown and all, but it really is the best kept secret Beth”Beth laughed lightly and looked coyly sideways at me “actually, my parents have never thought about that. I made up that. The thing that I knew about teen-age boys is that they don’t need much time to get hard again after they cum. So after he came I straddled his lap and started to kiss him. I also took one of his hands and put it between my legs, letting him play with my pussy making me wet again.After a few minutes I could feel him getting hard again, so I started grinding my now dripping pussy on his cock, making it harder. He started sucking my tits again and I lowered myself onto his dick. I started slowing. I moved to where our stairs were, and ascended slowly. Beth watched me as my balls and penis bounced with my steps. She was smiling. Then she climbed the stairs and I watched her breasts jiggle through her shirt. Her breasts are small but soft and bouncy. And with the nipples erect, it exaggerated the motion. I opened the door to our bedroom. Beth mentioned something about forbidden territory. I pulled back the covers, took off my shirt and laid myself down. Beth took her shirt off and lay down.