change their relationship (sister)

"I wish Sarah was my wild & free-spirited younger sister who had just moved in with me after her last breakup; that she has almost no sense of modesty around me - and in fact has always got a thrill out of flirting with and teasing me, even flaunting her sex life in front of me."

Holding his breath in anticipation, he looked back at Sarah to see how she changed. The physical differences were very subtle - longer, wavy hair, a more oval face, a thinner but still quite sexy body. But the way she carried herself was different. She seemed more free and confidant, openly displaying her body with ease.

She caught Tom staring at her and licked the cone in an exaggerated, overly sensual manner.

He stood entranced by the scene until she broke the moment with a smile. "Come here!" she giggled, motioning with her head. Tom walked over to her and she playfully punched him on the arm. "See something you like?" she teased, grinning. Turning toward him so that he covered her mostly from view, she briefly pulled down one side of her blouse, revealing a braless breast.

Tom's face grew red at her display and she laughed. "Oh Tom, you're always such a prude." She stood up on her tiptoes to give him a kiss on his cheek. "But you're very sweet. Thanks for letting me stay with you for awhile. And for trying to take my mind off of that asshole. You are the greatest brother!" she stated with conviction but then finished with another giggle.