"Then you saw me," Susan said in a whispery voice. "You saw me and the guy."

Tracy nodded, feeling her mother's gaze on her naked tits and liking it.

"So?" Susan asked.

"So nothing, Mother," Tracy replied. "That's your business."

A nervous smile spread over Susan's lovely face, then she turned and left her daughter to finish her bath. She was not bothered that her daughter had watched her suck the guy off. And the fact that her daughter had not shown anger made her feel good.

She arrived in the living room just as Bill came in. She greeted her son with a kiss, as usual.

"Tracy home yet?" Bill asked.

"Taking a bath," Susan replied.

Bill almost worshiped his sister, something that pleased Susan. Her children didn't bicker and fight like most, and Bill was always trying to please his sister. And Tracy liked her brother as much as he liked her. Now that Susan thought about it, Bill looked sad and lonely when his sister was out on a date, seemingly not knowing what to do with himself if he wasn't near her.

"I gotta put my books in my room," he said.

Just as Bill entered the hall, Tracy came out of the bathroom. She had not put her robe on, but had wrapped herself in a large towel, still fucking it in at her tits. Bill smiled when he saw his sister, then his gaze moved down to her long, exciting thighs.

"Hi, honey," Tracy said when she saw him.

"Hi," he mumbled back, a faint flush on his face.

Tracy moved down the hall ahead of him and Bill's gaze glowed on the backs of his sister's thighs. He could see the lower moons of her asscheeks and even part of the crack. He ran his lips over his tongue as he stared, feeling his cock swelling. Everytime he looked at his sister his cock would start getting hard. He loved to see her in shorts and he had been trying for some time to see her naked, but so far had not succeeded.