Start telling them what to do

You try to clear your mind. You could spend the rest of this night focused on how naughty, and unbelievable, and downright impossible this whole situation is. You could spend hours trying to wrap your brain around it. You could focus so much energy trying to understand what was happening, you'd ignore the fact that it was happening at all.

That, you decide, you can't let happen. Katie is staring at you. Tess is staring at you. And they're telling you they want this. And you want this. You worry about delving into this with too much enthusiasm, seeming like a giddy, horny, adolescent or a big, dumb, frat boy. But you know you have to put that all aside. You have to clear your mind.

But instead of delving headlong into the moment, you decide to be just the slightest bit playful and relieve some curiosity.

"Have you ever kissed a girl before?" You ask the two sisters.

You know Katie's answer, unless there's something she's been keeping from you for the past 6 years. But there's not. "No." She says with a shy smile.

Then Tess gives her answer. "No comment" she says with a defiant smile.

You shake your head. They're both enjoying this as much as you are. "Have you ever tasted a girl before?" You ask, feeling ready to let the moment carry you away.

"Of course not." Katie answers again.

"No comment." Tess answers again.

So you lock eyes with your sweet, lovely, girlfriend. Strands of brown hair have fallen into her face. You wonder if she's nervous, excited, aroused, all of the above perhaps. "Then I think she should be the first girl you taste." You say.

And Katie nods, turning her face to her Tess's again. You see her whisper, barely even a whisper, you see her mouth a word to her sister. You can kind of make it out. You think she mouths. "ready?"

Tess responds with a smile that's as good as a nod. And Katie's hand starts at the base of the front of her little sister's neck, her fingers taping on it, caressing it a bit. But soon turned southward and sliding over the top of Tess's chest, over the flesh at her midsection and down into Tess's skirt.

You can just tell the exact moment that Katie's fingers curl inside of her sister. Both girls close their eyes and Tess whispers. "Yes"

The room is almost silent for several moments. Tess moans very gently. You can't see anything that's happening beneath Tess's skirt, but you know from the look on Katie's face that she's doing her best to rub, excite, and penetrate her sister's pussy.

Then the moment ends. Katie pulls her hand from the top of Tess's skirt. Her index and middle fingers glisten with moistness. And almost immediately she's sucking on them, tasting her sister's juices.

Tess just watches with big, loving eyes as she licks the last bit of juices from her fingers. Then takes a breath, says. "Okay." Smiles and looks at you for her next instruction.

You're as hard as a rock. It's the most amazing sight you've ever seen. Soon to be eclipsed by whatever happens next.