Married to brother.

He flipped his sister onto her back a
slipped over on top of her, wedging his thighs between her thighs. As they both laughed and giggled his hard throbbing tool touched the thick soft thatch of pubic hair. He lowered his mouth to kiss on her lips and worked his tool to rest it throbbing, along her wet slit.

She could feel the shaft throbbing with pent up lust as it slid along her aroused and receptive slit. She made no attempt to withdraw. Nothing was said, not a word. They stopped kissing and all that could be heard was their heavy breathing. He purposely slid his errection back and forth along the deep wet slit. She raised her buttocks of the bed and pushed her sexpot up to meet the sliding shaft. They looked each other in the eye.
She spoke for the first time; "Just slide it in me"
With his right hand he manoeuvred his shaft to tease open her labia and placed the mushroom head on her opening. He gave a powerful thrust and the 7 inches of his sex plunged into his sisters canal of pleasure and joy.

"Oh oh she winced in pain as it was her first time.
Brother remained silent as he was lost in a haze of lust and longing thrusting his cock into his sister.

"I want to be your wife, plant your seed in me"
He felt his balls twitch and the tidal wave of pleasure burst forth as a huge torrent of cream surged from his tool.
She wrapped her hands around her brothers buttocks as he spurted into her, spurted his juice.
The performance was satisfying for the siblings. They pleasured themselves whenever they were alone at home. This continues even today as they live together as a married couple.