Step-Mom Needs Me to Be Her Man

I am heading out on a date, really hoping I get to 2nd base this time, and I don't notice my step-mom sitting on the couch. She stops me, She tells me I am not going out. I don't need to go out for what I need. My step-mom had me when she was young, she didn't really date much, and she looks AMAZING for her age. I know my friends joke about wanting to fuck my step-mom when I am no around. And, now, my step-mom is showing off her amazing curvy body. She put on lingerie just for me, she is going to do a lot of things just for me. Ever since that one time, when my step-mom rode me and made me fuck her, its like I cant be home and not have my dick hard non-stop. I am jerking off for the third time that day, my balls are still aching and I am jerking it hard when She walks in on me, I try to cover up what I am doing, but she is wearing this little nighty and I cant hide the tent. She asks me if I am thinking about some girl, as if I could think of anyone else but her now. She tells me its okay to masturbate, and starts to touch herself and encourage me to stroke it while she watches, but it doesn't stop there. Its been too long. Now my step-mom is acting like it never happened. Like I can see her everyday and not lust after her. Like now, watching her body as she vacuums. I cant let her tell me know. I have to show her that this isn't going to stop. That I HAVE to fuck her, that I will go crazy if I don't get it...