I’ve been walking around in skimpy, comfortable clothing. You’ve been stealing glances at me and you are almost constantly horny, which you try to hide from me as best you can but I definitely notice. I am secretly flattered by your attention and pleased that I can turn you on so much even though we're related. One day I am looking especially sexy and you suddenly say that you need to go to your room. I tease you about it a little bit "I wonder what you need to do alone in your room all of a sudden…” I deliberately show off my body a little bit more, pulling my top down slightly to show more cleavage before I let you go. A couple of days later we have some time alone in the house and I want to have a talk. "I don't mind you looking at me and thinking about me that way.. if it's just to take care of yourself.. It's even OK if you take care of yourself while I am around, even in the same room.. As long as no one else is around, and no one can see us through the windows or anything, you can take care of yourself while looking at me… I’ll just pretend not to notice what you are doing so that no one will feel embarrassed…" I adjust my clothing a bit to be more revealing and start some light cleaning around the room, doing poses that show off my body enticingly. Soon I get right up close to you, leaning down and giving you a good view down my cleavage while I clean something behind youAfter a moment of this you cum all over my breasts, surprising me. “I can't pretend not to notice what's happening if you cum all over me! “ We've fallen into a routine where if we're alone you’ll often masturbate while watching me. Today I keep looking over at you, biting my lip, as if I am resisting staring at you (and your exposed erection) while you relieve yourself in front of me. Abandoning the show of doing something normal while you watch me.. I strip down to my underwear and walk over, stopping right in front of you. “Are you liking our arrangement? if they knew about it, most people would say that what has been going on with us is pretty strange already.. Given that, maybe it wouldn't be that much worse if I didn't have to bother pretending you are not doing what you are doing around me. And if I am already helping you out by giving you something to look at... maybe I can help you out a little bit more. Would you like that?I kneel down in front of you and lick my lips. I move forward until my face and mouth are right in front of your cock Do you think you can keep a secret with your step-mom? I start to give you a handjob, “Just touching is one thing..but it would be very wrong for you to go inside of me at all” Then you cum all over my face and chest. It's a couple of weeks later and I have helped you out every day since that first time. This morning my husband is in the shower and I’ve slipped into your bedroom before you would normally get up. I give you a handjob, getting more and more turned on myself, and bringing your cock right up against my panties while I stroke you off until you cum all over my belly and panties. After a few weeks of our regular handjob arrangement, one night I sneak into your bedroom, I want our arrangement to start including... more. Starting tonight… It still has to be a secret we keep just between us, more than ever. But if we can do that, then we can take our relationship farther, starting right now. Do you want something like that, too? I climb on top of you and rub my body all over yours, kissing you We make out and I insert you into myself, riding you enthusiastically while struggling to keep my voice down, covering your mouth with my hand. Soon I cum, overwhelmed with passion and finally having what I’ve wanted. When I notice you are getting close to cumming “You can't cum inside of me (I can't go back to bed with my husband while your cum leaks out of me), I jump off of you“cum in my mouth”-I swallow it all (so that there is no evidence left behind) my husband is going on business trip soon and will be gone for an extended time We are excited to have the house to ourselves for so long and have barely been able to wait. Today, he has just left to get into his taxi for the airport and we wave goodbye to him through the front door. As soon as the taxi pulls away I close the door and you press me back against it, kissing me passionately and roughly pulling our clothes off. We have rough, frantic sex in the entryway and take advantage of our first opportunity to have sex without needing to stay quiet. It's years later and, despite some close calls, we've managed to continue our illicit relationship the whole time without being discovered. We are in love and have an amazing sex life. We again have the house to ourselves today I think that you are finally ready and want to know if you think it's time for us to take another step in our relationship. I want us to be a step-family.. our own step-family