Begin massaging Susan's sister's pussy

You watch as Susan begins squeezing her own sister's boobs. Your cock is hard as a rock and is resting against Michelle's soft leg. If she feels your cock - or even realizes you are naked she hasn't made it clear. She's keeping her eyes closed and aside from the occasional moan that escapes her lips, she's not said anything for a while.

You decide it's time to go for it. You slide your hands up Michelle's thighs until they get to her warm pussy. You bring your oily fingers to her pussy and first you cup it, waiting to see if she reacts. Then you slowly slide one finger up and down her slit. It doesn't take much pressure for your finger to separate her pussy and find her wet hole. She's so turned on her pussy practically sucked your finger in. Soon you are knuckle deep. One finger turns into two and then you are thrusting.

When Michelle lets out another moan, she's met by her sister's lips. Susan has one hand still squeezing her Michelle's boob, but the other is holding her sister's face as she begins to kiss her sister with more and more **** after the initial timid peck. As you fuck Michelle faster with your fingers eventually she looses herself entirely and fully opens her mouth to her sister's exploration. You watch as the sisters make out with each other. You cannot see their tongues, but you can imagine them dancing with each other.