Ongoing Story/Bring Sarah into the proceedings
From Create Your Own Story
Chapter 9: Making Jill suffer
"Oh God, Tom, I'm so sorry." Jill says, "I really thought they'd gone to the Water Park today. I had no idea it was tomorrow. Sarah! You get out of here now and no more spying on us."
"Hold on." You say, a devious plan coming to mind, "Let her stay. I've got an idea that will really turn you on Jill."
Dubiously Jill agrees.
"Jill. I am going to turn you on so much, you're going to be begging for it! Sarah. Take your clothes off and come over here."
Jill's eyes widen in shock and Sarah obeys without reservations. Sarah is obviously very curious and probably wishes she could dance for you too.
"Get down on your hands and knees." You order.
She obeys. You remove your clothing as Jill watches, you slip down beside her young sister and proceed to slips your massive member into her tiny pussy.
At first there is pain, but as you continue your actions, pleasure comes upon both you and Sarah. She is enjoying it immensely.
Jill watches on wide eyed. She can hardly believe that you are fucking her younger sister, but you can see that it is really turning her on. There is desire in her eyes, more than before. She sees that you are giving great pleasure to her sister. She wants to experience some of it for herself.
What do you do now?