I stumble upon my stepsister's lustful wife pleasuring herself and I vigorously penetrate her until I climax on her

I was walking around the house when I stumbled upon my step sister's wife pleasuring herself. The sight of her touching herself made me horny and I couldn't resist the urge to join in. I quickly undid my pants and began to vigorously penetrate her. She moaned in pleasure as I continued to thrust in and out of her. The sight of her writhing around on the bed in pleasure was too much for me to handle and I soon reached my climax, releasing my hot load all over her. This amateur encounter was one for the books and I couldn't help but wonder if this was the kind of passion that my step sister had been hiding from me all these years.