I am a nerd who is always watching porn until I let myself be surprised by my stepsister

I spend my time alone in my house when a very unexpected visitor arrives. Normally I tend to be very alone in the afternoons. I don't like being in company. I don't have friends. I'm a very unsociable man, since I take advantage of the afternoons to watch pornography. I love fucking. and express my milk but it turned out that my unexpected visit took it out of me