What happened after he paid double?

It was almost two in the morning when he took the two thick bills out of his wallet and placed them on the table without a word. The amount was double what they had originally agreed upon. Her eyes lingered on the money for a second, then slowly lifted to his face.
“Are you sure?” she asked in a low, velvety voice, almost amused.
He nodded. He didn’t want to speak. He just wanted to see what would happen when the limit disappeared.
She smiled. A slow, dangerous smile that promised that the rules had just changed. She took the money gracefully, folded it, and put it in her small black leather purse. Then she stood up, gently grabbed his tie, and pulled him toward her until her lips almost touched his ear.
“Then… there are no more limits tonight.”
They left the intimate downtown bar and boarded the hotel elevator without taking their eyes off each other. The tension was so thick that the air seemed hard to breathe. As the apartment door closed behind them, she removed her long coat in one fluid motion.
Underneath it she wore only a short black dress made of fine silk that clung to her body like a second skin. She turned her back on him and glanced over her shoulder.
“You paid double… so you’re entitled to everything I don’t usually offer.”
What followed was a night he would never forget.
It wasn’t just sex. It was complete surrender. She allowed him to explore her without restraint—with his hands, his mouth, his eyes. She knelt before him with calculated slowness, looking him straight in the eye as her lips did things most men only dream of. Then she climbed onto the bed, sat on top of him, and took control with a hunger that ordinary money couldn’t buy.
At one point, she lightly tied him to the bed rails with his own tie. “That’s the bonus for double,” she whispered, laughing softly, before descending on him again with agonizing slowness. Her body moved like a wave—slow, deep, hypnotic. Her moans weren’t fake, but real, almost animalistic, as the pleasure grew more intense.
When she felt he couldn’t resist anymore, she leaned over him, bit his earlobe lightly, and whispered in a hoarse voice:
“Next time… if you want more, you’ll have to pay triple.”
In the morning, when he woke up, she wasn’t in bed anymore. Just a short note on the pillow, written in red lipstick:
"Thanks for the double.
You were a very good student."
He smiled, looking at the ceiling. He already knew he would pay three times next time. And maybe even four.
Because some pleasures, once tasted, become expensive addictions... and extremely sweet.