Jack is seventeen years old and is the son of my partner and his ex wife. He's not even my stepson yet, as my fiance and I don't get married until September. Just over a month back I walked into Jack's bedroom thinking he was out to get his dirty laundry. When I stepped inside I found him lay on his bed masturbating. His beautiful cock looked so big as he stroked himself up and down. The thing that really got my attention though, was Jack holding a pair of my used panties to his face and he was sniffing the crotch area. He didn't even stop masturbating when he saw me and in fact he appeared to quicken his stroke. Making my excuses I left quickly. That in itself isn't a confession. The real reason for my confession is since I found him wanking, all I could think about is how beautiful and big his cock looked and how much I've fantasised about him fucking me with it.
Five days ago I was alone at home and knowing Jack would be home soon, I intentionally lay on my bed pretended to be asleep, leaving the bedroom door wide open. I also knew Jack had to pass our room to get to his. I was lying there with my legs spread apart having taken my panties off and I'd let my top ride up above my bare breasts, when he came into the house. I heard make himself a drink and then heard him climb the stairs. It was awsome knowing he was watching me and I knew he'd stopped at our bedroom door. Waiting a minute I slowly put a hand down to my pussy and began to massage it, moaning slightly as though I was dreaming. Still touching myself I made out I'd woken up and sat up quickly, my breasts becoming totally uncovered. Looking in Jacks direction I saw him masturbating again. If it was at all possible his cock looked even bigger. Feining shyness and embarrassment I covered myself with the duvet, but not before I'd spread my legs again and let him see how wet my pussy was and how engorged my large clit had become.
Jack was in his own room within a minute, but he didn't go empty handed. Walking up to where I'd dropped my panties on the floor he picked them up and walked out. Through our thin walls I could here him masturbating again when I went into the bathroom. He didn't know it but his future stepmom was masturbating too, using the long handle of a hair brush as she showered.
The last couple of days we've sort of missed each other, but each time he see's me now he smiles a knowing smile. I know if he asked me to, I'd find it hard not to fuck him. My dilema is, if he does ask, do I take him to bed and show him what a 36 year old woman can do for him and his stunning cock ??.