Step daughter caught me
I woke up late one Saturday morning to an empty house. I got up, went to the bathroom and had something to eat. I got a text from my wife that her and the kids were out shopping. Our daughter and my step daughter and step son. My wife is a few years older than me so my step kids are older than our daughter. I am a 6 foot tall relatively fit and healthy guy. I decided to take a shower and jerk off before getting dressed. Hard as a rock I'm stroking away when I look up and my step daughter is standing in the door way watching me. I froze but felt so incredibly turned on I started shooting cum all over my chest while looking into her eyes. she smiled and walked away. I later apologized and she said it's not a big deal. That was 4 years ago, she is 20 now and ever since we both mastubate with our doors open and "pretend" not to notice each other is watching. That is when I learned I really enjoy watching and being watched.