Maybe the priest was wrong

Nancy looks thoughtful for a few seconds, then says, "Well, the bible condemns shellfish too, and the priest doesn't seem to care about that. They even had a shrimp fry dinner at the church last month. He seems to pick and choose what's a sin."

"Exactly," you add in.

Nancy looks at you, then at Kristen, then at Kristen's wobbling tits, then at her own pussy. She leans back and says, "Okay, Kristen. I'm willing to try. If it feels anything like his cock ..."

You almost shout, "Hooray!" but contain yourself. This Catholic girl who was a virgin an hour ago is going to try lesbian sex! You're going to get a threesome! You start getting hard immediately at the images of Nancy and Kristen that are forming in your head.

"Not the same, but good nonetheless," your girlfriend says as she crawls between Nancy's knees. Her hands run up Nancy's thighs and belly, caressing her lightly. She blows across Nancy's lightly-thatched blonde pussy, making the girl shudder and moan. Kristen moved her hands up to Nancy's full breasts and gently squeezed them as she licked her lower lips. Nancy squirms, and then gasps when Kristen pinches her nipples. Her gasp is interrupted by her scream as your girlfriend sucks Nancy's clit. Kristen relentlessly sucks and licks the hot button of Nancy's pussy. Nancy grabs Kristen's head and presses it into her quivering mound. Her back arches as she shouts her passion out again. Kristen is really going to town on Nancy's cunt, and her hands are squishing Nancy's tits and rolling her nipples hard. Nancy can't hold still, even if her life depended on it. The sounds of her pleasure touch you deep inside, and you start gently stroking your cock.

Kristen moves one of her hands from Nancy's tit and moves it down to her pussy. You can't see it, but you see Nancy's reaction when Kristen pushes two fingers inside the Catholic school girl's wet cunt -- loud moans and her hips bucking up into Kristen's face. The moans rise up her vocal range until she breaks into a hoarse yell of ecstasy. Her body thrashes into a grand mal orgasm, as Kristen holds on, continuing to suck her clit, finger her pussy, and pinch her nipple at the same time.

Nancy comes for about two minutes. You stop touching your cock for fear of shooting off. At the last, her body just quivers and shakes, and she sucks air down like a marathon runner.

Finally, Nancy pushes your girlfriend's head away from her mound.

"You were right. That was amazing," the school girl says, completely overwhelmed by her climax at the tongue of a woman. "You two can trade off making me come any time."

Mission accomplished! Virgin corrupted to the ways of the flesh.