You saw her naked.

Katherine gives you a piercing glare and says, "Have you ever met my older sister, Emma."

You look at them and contemplate your choices. Your first choice is you can come completely clean but that would become the end of your night. Your next choice is lie and says you never met. This option would cause either her sister to come clean, or you would be caught in a lie either way. Your last option was to be very vague, and it would be the safest option. You say, "We met briefly."

Katherine says, "Oh really, you wouldn't mind my big sister giving me a ride to the prom."

You feel sweat come down from your forehead and scratchy voice say, "That would be cool."

They're parents meet them downstairs for snapshots of Katherine and you. Then the three of us walk to Emma’s car to drive to the prom. As soon as you exit the driveway, Katherine moves your hand along her thigh and guides her tongue in your mouth. You move your hand up her thigh as her tongue massages your mouth. You can feel her petite hands rubbing against your crotch affecting your member to get harder and harder. She slowly tilts her heads as she allows you to become the aggressor. You slowly inch your mouth from her mouth to her neck. You slowly travel more south and reach to her supple breast as the car stops and catches your attention.

You look up and see that the car is parked at a secluded end of the beach not at the school. You give a stunned look as Katherine grabs your crotch and says with dominating tone, "So you saw my sis naked!"

Emma says, "I think he should strip for us; since that would be fair."

Katherine nods her head as Emma puts on some music for you to strip off.