When I was fourteen, my father got remarried to a nice woman he'd met on a dating site. She had two kids of her own, both girls. One was much older and living away at college, the other was 16 and living with her. So they moved in with us, and the situation wasn't bad at all. My step-sister was nice enough, kind of bookish, and kept to herself.

After we'd lived together about six months, I was lying in bed when the door opened. My step-sister poked my head in and asked if I was asleep. When I said no, she went out and shut the door. I thought it was weird, but had forgotten about it by morning. A few nights later the same thing happened. Then again he next night. It had started to weird me out.

The next time she did it, I didn't want to say a word. I lay still and pretended to be asleep. She asked again and I said nothing. I heard the door shut, and then heard the floor squeak as she came into the room. She pulled the bedsheet off of me very slowly, then reached into my boxers and pulled my penis out. I pretended to be asleep, but opened my eyes just enough to see her by the light of the television. She had her pajamas and panties pulled down and was touching herself while holding my cock. I started to wonder if she was doing this to me every night.

I got a hard on, and she stroked it very softly and gently while masturbating. I pretended to sleep though the whole thing, and I came all over her hand. She wiped it on her pajamas and finished herself off before putting me away and pulling up the bed sheet. She crept out of the room and shut the door.

Every night after that I would wait or her and pretend to be asleep. It was at least once a week she'd come in and jack me off. Sometimes she would lick or kiss my cock. Once she tasted the cum on her hand. She'd always cum quietly and the leave. This went on until she was 19 and went off to college. I never told her I was awake.

She's married with kid now, and still doesn't know that I know. I don't think she did anything wrong and enjoyed every moment of it.