They go up to the ballroom

Jess and John stood in front of a bluis backdrop as Mrs. Applegate took their picture. She asked if Jess wanted to remove her mask for the photo but Jess waved her off saying it was necessary to pull her outfit together.

The teacher complained about John's chaste attitude. She placed John's hand on Jess's ass. The interaction caused both of their faces to be flush.

"I'm sorry," John said in the elevator.

"It's alright," said Jess a smirk forming, "I didn't mind"

Before John could respond the doors opened. The ballroom was already busy with people and other students were mingling. Everyone was dress to the nines, but when Jess walked in several boys appeared to have been punched in the gut or had their foot stepped on by their dates

Jess maneuvered John through the crowd to an empty table on the edge of the dance lights. "This should be secluded enough," she said. "Don't want too much attention early on. The night is young."

A few of John's friends came by to congratulate him on finding such an attractive date. None recognized Jess, even John's closest friend Chris who had a secret crush on Jess for years.

Jess was chatting with their dates. Most were girls Jess never hung out with, but even if they did they were too enamored by her stories of France to put two and two together.

The dinner portion of the Prom was uneventful until the DJ started up. All the girls began dragging their dates to the dance floor. Leaving John and Jess behind.

Jess stood up and leaned down to whisper into John's ear, "Let's dance."

He turned his head, getting an eyeful of her cleavage. "Uh... Maybe we shouldn't?"

Jess flicked her hair and some how managed to make her breast even more voluptuous than before. "Think Curtnéy Harris would be hottair than a sexy Francais girl lik moi?"

John chuckled and took Jess's hand. "Lead the way," he said.

The fast moving dancing was entrancing. Jess's dress seemed less of clothing and more of just fabric clinging by a thread. How it stayed on John did not know. The undulation of the beats went with Jessica's grinding against John's body. His hands went onto her upper arm and he grew closer until she was held against his body. He grabbed her hip and smelled her hair, fresh lavender.

She continued to grind against him. Then he heard a soft whisper, "Take me now."

John let go and rushed back to the table. It was dark, but he knew he had to move out of sight before Jess saw or felt what had happened in his pants. His member was long and hard. Did I imagine her say that, he asked himself.

He didn't love his sister that way. Or at least he thought he didn't...

"John, what's wrong?"

Looking up he saw Jess. A concerned look on her face.