"You can't resist", she said. "Just like I told you!"
He was out of his mind with lust for her and could not verbalize. He could only groan his reluctant agreement.
They were naked and copulating on her bed. She was beneath him, legs open. Her pussy impaled on his thrusting penis. He was physically stronger and on top of her and in her, yet she had all the control.
She had bet him that if she let him fuck her for 5 minutes, he would lack the will to stop and pull out. Instead, he would be unable to resist her, and keep fucking her until he came inside her.
He loved fucking this sexy woman, though was confident he could control the situation. He was finding out how wrong he was.
Perhaps the first hint he shouldn't have taken this bet was the predatory gleam in her eye when he accepted, and how she immediately pulled him down onto her. Her pussy was tight and coy playing hard to get, not yielding immediately to his intrusion. But nonetheless not TOO hard to get. He pushed his rock hard cock in slow rhythm against her, initially blocked and pressing stiffly, with more pressure and then less but staying outside. But slowly she yielded, and he eventually breached her lips and slightly beyond, then progressively deeper on each thrust. So erotic, that initial penetration and subsequent descent. Her wetness and warmth growing around him. His hardness pushing deeper and filling her. She smirked up at him with gleeful eyes, and ran her fingernails up and down his sides and back. So easily he was making himself hers.
Now he was finally balls deep. He savored the moment, temporarily motionless. She liked it too. Then she squeezed him with her internal muscles.
He had closed his eyes. He opened them but they were unfocused. She already had him lost in her. He resumed thrusting.
"Feels good, doesn't it?" she teased him. "Oh, so good!" he moaned against her as he continued thrusting. His balls slapped against her on each downstroke, and on the way up he pulled most of the way out but not the whole way. He wanted to feel her continuously, and stay inside her.