As time past me and my brother really got to getting things heated up `I was now getting a good climax and so was he and like me he could not get enoughwe were doing it some times 4 or 5 times a night when we could sneak into each others room. We would listen to mom moaning as she masturbated we would giggle and talk about how she needed a good fuck. and at times she would date a guy and on these nights me and brother would be by our selves and could really get it on. Then mom got serious about a guy he was several years younger than her and he got to staying around alot and would spend nights with mom god it was so wild hearing them,he really made mom scream. Then mom and him got married and things went pretty smooth it just made it hard for me and my brother to get it on we almost got caught several times. I thought he was a xexy looking guy and wondered how good he would do it I liked getting fucked by my brother he could give me a good climax but I got to wanting more. And I would sat in jim,s (step dad)lap alot. And most of the times it would be before going to bed and I would be just in my panties and a t-shirt which barely covered my ass. and now i was starting to grow some tits. and we would chat about diferent things and I started teasing him about making mom moan so loud,and I could feel him get hard as I sat in his lapand as time past i would sort of squirm around in his lap and one night mom was taking a bath and i was in his lap and i was teasing him about mom from the night before,he said bet you would like it too. I said I bet I would,And I added that I bet I could handle it too. I could feel he was getting on a good hard and his hand was on my leg right below my panties and i for some reason got brave enough to tell him he could touch me if he wanted and his hand slid up to my panties and he started rubbing me through my panties that was getting wet and then he slipped his fingers beneath my panty leg and let his finger slid up and down my aching wet slit i told him that it felt good,then i whispered i want you you to fuck me. He sort of groaned and said you sure??I could see the passion in his eyes. I said I need it,Mom was still in the bath and brother was at a friends for the night.