Kiss and lick her body
From Create Your Own Story
You place your hands on Katie's breasts, firmly. You, then, kiss her soft lips, passionately. She trembles, nervously. Shortly after, you begin to work your lips down her body, kissing her neck and chest, then caressing it with your tongue. Finally, you get on your knees, holding your sister's butt cheeks, rubbing them, gently. You, then, proceed to plant your tongue upon Katie's clean pussy lips, lapping at it, in delight. Katie begins to moan softly, overwhelmed by this intense pleasure.
"Oh, Hilary!" Katie exclaims, "I-It feels so good."
You giggle. "Hmm, you know it does baby."
Suddenly, you turn around and see your sister, Jillian, standing there, watching! You and Katie immediately stop and gasp, in shock. But your sister has a kinky smirk on her face and walks towards you, her hand rubbing herself.
What do you do?