I have a half-thought-out plotline for a story. A young man, just turned 18, goes to spend the summer with his aunt. His aunt is a beautiful, mature woman, about 40 or 50-something years old. She works out regularly to maintain a flat stomach and toned muscles, and has full, round breasts. Of course, this being a pornographic story, the aunt seduces her nephew, and has sex with him.
Then the boy's 21 year old sister comes to visit her aunt, and her baby brother. Brother and sister are close, and best friends. They have a normal sibling relationship. The aunt, though is bisexual. She has always noticed her niece's sleek, supple body with its taut stomach and very large, full breasts. They are bigger than her own. So she seduces her niece, and has lesbian sex with her.
Then the aunt decides to have a threesome with her niece and nephew. She begins by masturbating herself while she watches the sister have sex with the younger brother. Brother and sister have to learn to get used to having sex with each other, while still maintaining the close relationship they've had since children. I need help fleshing this plot out into something I could make a story with.
Then the boy's 21 year old sister comes to visit her aunt, and her baby brother. Brother and sister are close, and best friends. They have a normal sibling relationship. The aunt, though is bisexual. She has always noticed her niece's sleek, supple body with its taut stomach and very large, full breasts. They are bigger than her own. So she seduces her niece, and has lesbian sex with her.
Then the aunt decides to have a threesome with her niece and nephew. She begins by masturbating herself while she watches the sister have sex with the younger brother. Brother and sister have to learn to get used to having sex with each other, while still maintaining the close relationship they've had since children. I need help fleshing this plot out into something I could make a story with.