A helping hand-for sis in law

I then told her I was done with the supreme massage, but she would need to try the ultimate sometime. She asked what the ultimate was I said that it is the supreme with a lot of added attention. She asked what was the matter with having the ultimate now. I had already figured that would be her answer and said ok so the ultimate it is, are you ready I asked her she said she was ready. With that I quickly unclasped her bra from the back and threw it off to the side, what fell out surprised me the bra must have been at least two sizes to small, I asked her why she did that she remarked I’m self conscience about the size of them. I said honey there is no need for that and moved in to suck on her nipples as I played with her other breasts. At first she became alarmed, I look at her and said you asked for the ultimate didn’t you, and here it goes. I was totally enjoying myself as I suckled her fine young breasts. It didn’t take long until I could feel her building up to orgasm again so I moved my hand down to her wet panties and stoked her lips finally resting on her clit. I began to rub it through her panties knowing the friction would bring instant results and it did soon little Becca was shaking in my arms as her body experienced her most powerful orgasm of her life. She let a wail as the juices soaked her panties and my hand. I never let up on my sucking and this along with my hand working her clit prolonged her enjoyment. When she was done I held her in my arms as she recovered. I said well there was step one of the ultimate massage. I picked her up and laid her on the end of the couch so her legs dangled over the armrest. Making sure she was comfortable I knelt down and put her legs over my shoulders and started to lick her wet hot pussy through her panties. Becca responded well and was starting to moan a little growl. I continued to work her pussy with my tongue through her soaking wet panties. She had the sweetest tasting pussy, which I had ever had the pleasure to munch on. As I worked my magic with my tongue I began to knead her ass and slowly began to remove her panties. When I had removed them I went back to licking her lips, beginning at the bottom, I worked my way up to her clit and found it there all extended. I began to gently suck it as I worked my fingers in to her pussy and slowly began a finger fuck as I sucked on her nub, she was in shear ecstasy as she started to squirm and moan with delight. I stopped for a minute and she yelled don’t stop. I laughed and asked if she ever had her pussy eaten. She said no. I said I would begin again if she would tell me all about how her hubby had sex with her. She said ok, just start again I’ll do anything! So I went back as she talk of the quickness of their sex. 
She went on to say; that she thought sex had been overrated and no longer wanted the experience. I asked her how she was feeling now? Wonderful she moaned as I hit her clit with my tongue and then again, I could feel her orgasm beginning. I slowed up the pace of my fingers, as I began to swirl her clit with my tongue picking up the pace, she began to squirm as another orgasm hit her full on her juices came gushing out filling my mouth. I couldn’t believe the amount of the sweet tasting nectar. I continued to gobble up her juices until she was semi dry. I look up to she her eyes still closed and a blissful look on her face. I knew it was time to give her the finale. I stood up and removed my pants, Becca, was in another world and didn’t even notice. I removed my shirt and sat above her head on the couch. Sitting down I slide her head on to my leg and reached over and grabbed a hand full of tit, all of her skin felt hot to the touch, she kept her eyes closed savoring the joy of multiple orgasms. I looked over her sweet young body, wondering why my stepbrother would be so stupid as to not spend every moment caressing it. Oh well I sighed I gave my cock a hard squeeze to deaden the need to cum. I then quietly asked Becca how she was feeling, like I needed an answer, her hand was now on mine as I stroked her firm tits. I don’t think she knew that I was now naked. Becca I purred, are you ready for more? With no hesitation she said yes.
I leaned over and began to kiss her. She responded with putting her arms around my neck and pulled me close, to her as we kissed passionately I put my arms under her arm pits and in one swift moves picked her up and sat her on my lap her knees straddling my legs. She had a look of surprise as she realized I was naked and now sat above my throbbing cock. 
She looked down and almost looked sacred for a minute as she realized the size of it. While I don’t consider myself huge I’m proud of my unit. I had to laugh at her as she continued to stare at it. It a lot bigger then Steve’s she said. I took her hand and placed it on it, saying here feel it. She moved her hand up and down my pole, tentatively at first. I said have you ever played with a cock before, she said just in helping Steve’s in when we have sex. I told her to play with it. It was quite amusing as I watched her play with it, she ran her fingers up and down my shaft, she paid special attention to my veins, which were by now popping out to there maximum state. Her eyes reminded me of a small child that had found a new toy that had caught its fancy. She ran her fingers over my head and the sensation about brought me over the top, but I was able to manage holding it back. I guided her hand to my balls. She took her time squeezing each of my balls in turn as she played away I put my hand on her pussy and began working her lips gently, slipping a finger in and out tracing the outer lips of her tight little pussy. 
She continued to play with my tools, as I moved to rub her clit. I used my free hand to pull her in to me and began sucking on a nipple. As I rubbed her love button, in a few minutes I could tell she was getting ready to have another orgasm. So I stopped and moved her into a position so I could get my cock close to her pussy. I put the head of my cock up to her lips and told her to rub it against her pussy. She took hold of it and began to move it along her outer lips. I was having trouble containing myself at the feel of her young twat on the head of my cock, but I wanted her to experience the ultimate trill of sex, not just a slam bam thank you ma’am type she was used to. I took hold of the base of my cock and gave it a squeeze to hold the need to cum. As I could feel her juices start to coat my cock I slowly pressed the head of my throbbing cock into her wet box and slowly pulled it back I did this over and over each time gaining more entry. Her pussy was very tight, and I continued to slowly enter her, she put her arms around my neck, and began forcing herself down on my cock, I soon had my shaft all of the way in and began so slowly thrust in and out. Becca tried to speed up the pace but I held her hips, I wanted to give her a slow ride, plus any more increase in speed would have set me off, as it was I was doing all I could to hold my load back. 
Our position allowed me to nibble on her nipples as she went up and down. She had hers eyes closed and I could tell she was really enjoying herself. After a few minutes of slowing fucking her I picked up the pace as I did I grabbed her breasts and began kneading them and tweaking her nipples. This sent her over the edge and she began riding my cock like a speeding freight train. She let out a wail as she started to orgasm, and I let out a similar wail as I shot my hot load deep into her wet hot pussy. Even after we both had cummed we didn’t slow down the pace, she continued her ride, her position over me allowed her to lift almost all the way out and then she would slam down burying my cock in places she had never felt anything before. I reached around and began playing with her ass cheeks, massaging them. Pulling her cheek apart as she rammed down on my cock allowing for more depth. I reached around with one hand and rub her clit and up and down her sopping wet pussy I moved my other hand between her legs and soaked it with her juices. I then took a wet finger and began circling her rosebud, gently pushing in on it. Becca let out some small moans and I took that as a sign to proceed and slowly buried my finger into her ass. 
She had never even slowed down and I was having difficulty keeping my thumb on her clit, but her motions had a way of my finger in her ass pulling in and out on its own. By now I could feel myself getting ready to cum, so I picked up the pace on her clit as best as I could and soon we were cumming in unison again. After the orgasms had subsided she collapsed against me and we lay there, her breathing still fast she whispered in my ear WOW! I have never felt so good or so exhausted. I let her lay there as my cock deflated and popped out on its own. Her breathing was back to normal I looked to her and found her asleep. I sat there for a while to be sure she was fast asleep and got up and tucked her into bed, but not with out kisses on each of her tits. I left her naked and covered her up and went to the bathroom and cleaned myself up, got dressed and lock the door on the way out. Already thinking of a way to get with her again. Then with a devious smile I thought of a plan to teach the stepbrother a thing or two.