I was standing in the kitchen when my step-son approached me concerned about how stressed I seemed. He offered to give me a massage and I gladly accepted. He started rubbing my shoulders and I couldn't help but let out little moans of pleasure with how great it felt. I was enjoying the massage when I felt something starting to poke my back. I move to look and notice that my step-son has a boner. Immediately I move away and demand to know why my step-son has a boner while massaging his step-mother! He tells me that he couldn't help it. I tell my step-son how inappropriate that is and that he can't have those thoughts ever again. A few days later I was getting ready to go out to dinner with my friends, my step-sons step-father had all ready left to see his when my step-son blocks my path. He is looking at me like he is going to bend me over right there and take me. I tell him to knock it off but instead he pulls me in close, pulls my shirt down and starts running his hands up my skirt. I pull away knowing its wrong and knowing its even more wrong that I liked it. I can't hold back anymore and fall into my step-sons arms, kissing him deeply and passionately. There's no more holding back. My fingers slide down my step-sons chest to his pants unbuckling them and pulling his cock out. Finally getting to see my step-sons cock for the first time in so long. My hand grabs around it and I realize just how huge his cock is. My eyes go wide, I'm in awe. There's no way I can fit that inside of my mouth! Why does that turn me on so much? I have to know what he taste like, I have to feel his huge cock inside of me. The next day my step-son approaches me in the kitchen asking me what I thought of our time together the night before. I feel so ashamed of myself. How could I be such a terrible step-mother and have let my step-son fuck me? What if his step-father found out? There's no way I'm letting that happen again. My step-son comforts me and calms my worry. He tells me how much he enjoyed it and that he would never let anyone find out. My step-sons loving words remind me of how much I did enjoy the night with him. I try to push away the thoughts but my step-son can tell and pulls me into him. He kisses me, passionately then pushes me against the wall. I come to my senses and try to resist but its to late, my step-son is on his knees moving my panties to the side. He moves closer to my pussy and starts licking step-mommy's clit. I can't resist how good it feels. I lose myself in the feeling of my step-sons tongue moving back and forth over my clit. Before long I start begging for his huge cock inside of me. I don't want to wait another minute for him to stretch my pussy again. My step-son bends me over and slides his huge cock inside of me making me erupt in moaning. I get so close to cumming but tell him to stop so I can face him while we both cum. I urge my step-son to push his cock as deep inside of me as he can and fill my pussy with his cum.