I live in a house with two roommates "one male and one female"I have only recently started with sexual experimentation which led to my situation where...my female roommate became my mistress and have watched my girlfriend have sex with another guy once before this story which I never considered cheating since it was a one time experience that included me and my mistress.This is a story about how my girlfriend cheated on me for the first time"as in had sex with another guy behind my back" and the. Having needed each other so badly for so long. When they looked into one another’s eyes they could see how much they loved and cared for each other. He woke up later and planned their evening together. He rented a Limo and they went out on a romantic dinner, after dinner they went to the movies, she wore her black dress, and black thigh highs, and they watched a very romantic film together, holding hands in the movie theatre, touching and caressing each other, she felt his hardness, and he ran. Our lips met, firm at first, then melting into a soft wet kiss. Our tongues played with each other, wrapping around like two snakes. I knew I had to have him.I opened my legs, and he repositioned his body, letting his groin settle in between my legs. I felt his cock growing hard between my legs, and I knew that Micheline hadn’t been exaggerating. He was long, and thick. And he would soon be inside of me.We broke our kiss, and we each hurriedly striped out of our sleepwear. Naked, he lay on top. So it was to her great surprise that it was she, not April, whom the soap opera actor had noticed. It gave her fragile teenage ego a healthy boost. Here was a guy who was successful, famous and wealthy who seemed to see past her meek smile, tubby belly and wide hips. He was interested in her, not her boobs and definitely not her sister.It only bothered her a little that there was seventeen years between them. It didn't seem to be an issue with her mom and even her dad seemed okay with the way.