I took one of his nipples into my mouth and sucked and tongued it before biting down hard on it. He bucked especially hard a couple of times before sw...nging me over him as he rolled over.Looking down on him from the cowboy position, I was in complete control. I ground my ass all over his cock while I bounced up and down on it, squeezing my ass shut every time his cock was going out, then impaling myself when it went forward again. I pinched both of his nipples as I rode him and he slapped my. I sent the message ‘truth or dare’.‘Truth’‘You like the picture?’‘Nice. Is that big?’Hormones pouring into my blood made me bolder, more brash than I should be with my sibling, but hell, she started it. ‘Big enough to make Angel happy, want to try it? --- Truth’My phone was quiet, she didn’t answer. Just as I regretted sending her the last text Erin slowly opened my bedroom door. She looked timid, hesitant, but she came in. My pants were still resting on my ankles, my cock about half the size. She didn't like being pressured about it everyday and she told him that she wanted to save that for her husband and if he followed their plan that it would be him and once they were married she promised that she would do it every day, but by that time, he said, you won't be any good at it and maybe she should at least practice every once and awhile on him,so when they are married, she'll be a head of the game. Truthfully the thought of sucking his penis wasn't that appealing, she kind of. “Nap you are the one I always dream in the night and masturbate, I was longing to have this cock of yours in me and I am not going to loose this great opportunity” saying this she started to suck my cock and started to roll her tongue on the head I was in heaven, she sucked my cock for nearly 10 min and I could not control and told her I am going to cum she said not so soon. She got up and removed her nighty and stood in front of me and said “I am all yours tonight I want you to make this night.