Me and my husband are at a masked party. We dance and after a couple sips I start feeling kinky, start touching his cock through the pants and ask him to follow me in a room. It feels so hot and risky to fuck him at the party. I sit on the bed, unzip the pants and grab his cock who feels harder and bigger than usual. I lay on my back and he starts fucking me really good. He keeps fucking me until I grab his mask and take it off. " Wait! You're not my husband!" I am fucking a stranger! I take a better look and notice that is my estranged step-brother. He didn't stop fucking me and I can't control and climax although I just find out I was fucking my own step-brother. I also remember that I am not on birth control and say it out loud. Few weeks are passing and I find out that I am pregnant. I rush to my step-brother's place to confront him. Me and my step-bro didn't speak in 15 years because of his pasts mistakes. I feel so disgusted to carry his seed. I want to leave but he pushes me on the bed and start touching me. I get really horny because of the hormones and let him fuck me, although I know that is so wrong. He keeps fucking me until I climax and he cums inside me once again.