You asked and I listened. This may not be where you thought the story would go, but I hope you like it. Keep giving feedback with your votes and your comments. Enjoy!
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The soft sunlight poured into the room and onto Beth's smooth, supple breasts as she lay beneath Jack, mewing softly with each thrust. She arched her back ever so slightly, and Jack took the opportunity to let his hand travel down her body as he filled her. From the curve of her neck, slightly groping her firm tits and hard nipples, then across her taut stomach and down further to...
"Beth, honey? You home?"
Her mother's manic voice rang out in the almost empty house, and Beth felt every muscle in her body tense. Jack froze mid-thrust.
"I made a killing at the casino last night honey! I thought we could go out for a big brunch," her mother's voice trailed off as she walked into the kitchen.
"Jack," Beth's eyes were wide with terror. "Get up! I have to get out of here!"
Jack gazed into her eyes, seeing her fear, but he couldn't bring himself to move. The sound of her mother's voice and the possibility of being caught that came with it, had turned him on like never before. He felt his cock twitch. He couldn't help himself from leaning down and kissing Beth passionately, sliding his tongue into her mouth as he heard the muffled sounds of her mother putting her purse down on the dining room table. He began to thrust again, with a new vigor, into her tight, little pussy as she pushed against his chest.
"What are you doing?" She frantically whispered once he broke their kiss. "She can't catch us like this! Don't be stupid!"
But Jack's rock hard cock only pushed deeper inside of her as he grabbed her wrists and held her down. He leaned over her to take a nipple into his mouth and suck it lavishly.
"Jack, please, no-" The moment she said it, he lifted his head with a dark hunger in his eyes. He pressed his body down on top of her and fucked her harder and faster.
She began to moan as the weight of his body on hers pressed her g-spot into his probing cock. With no way to stop him and no power to move, Beth felt her body build closer and closer to an orgasm.
"Jack, this isn't like last night! It's not a game. We cannot get caught with your dick inside me," Beth whispered breathlessly. But even her argument had begun to turn her on and bring her closer to the edge.
"I'm sorry Beth, but I can't stop. I need this baby. I need you. I need to come in your tight. Wet. Pussy. Right. Now!" Jack groaned into her hair as he unloaded his cum deep inside the 18 year old daughter of the woman he was dating. His final thrust set Beth off and she followed in waves of pleasure as she bit his shoulder to stop herself from crying out.