You're right.

She turns to look at Sophia. Just as she's about to renounce her love though, something clicks inside of her, and she just sighs.

"Sophia, he's right. I do love you and I want to be with you forever, but how can we possibly make this work?" Holly begins to cry. I walk up to her and hug her saying, "We'll make it work Holly baby. We won't ever struggle for money, I'll see to that. We'll be great together. And Jane, I love you and I don't want any of you to get birth control. We should ALWAYS have unprotected sex, it's the hottest, and I love the idea of getting you girls knocked up. Take pregnancy tests, and we'll see what happens."
I pull them all into a hug and it soon it turns into a weird four way kiss, with all of our tongues tangling together in a carnival of saliva, my tongue overlapping with the wet mouths of Jane, Sophia and Holly.
"Ok Sophia," Holly says, "Maybe I am a bit of a lesbian"
"Yes Holly, you're my filthy lesbian slut" Sophia says, and they both giggle.
"And I'm everyone's slut" Jane says, giggling. "Well, by everyone, I mean you three, no other human is getting their hands on my pussy."
"So which one of us gets to marry you?" Jane asks.
"you of course!" I say, which makes the other two girls look upset. "I understand why you'd be upset, especially you Sophia, but it's ok, you and Holly can marry each other, since you're probably as in love with her as you are with me by now. We'll all get a huge house together someday, and fuck each other 24/7, the marriage is just the official thing we put out." They both look happy with this, and glance at each other before blushing. They make such a cute couple.
"What now?" Sophia asks.
"I fuck your ass, then we all go home. Holly, you'll be the first ass I fuck next time."
"Fine by me" Holly smiles.
I look knowingly at Sophia while the other two watch, their hands buried in their panties.
First I remove her tights, kissing her passionately, our tongues dancing. Her panties seem to have come off along with her tights, and they are clearly damp. "I love you Sophia" I say.
"I love you too John", Sophia replies softly. I remove her top and bra quickly, suckling on her nipples a moment before pushing her down on all fours.
"What about my skirt?" Sophia says.
"I want you to leave it on" I reply.
"Mmmm" she moans as I kiss her.
I spread her ass cheeks, spit on Sophia's crack and rub it in for lube. I slowly stick my index finger in, and begin pumping it in and out. When I think she's ready, I remove my towel and align my huge cock behind her virgin ass. "Ready to get your ass fucked to high heaven Sophia?" She moans, not replying with words, but I know it's a yes, so I ram it in there unsympathetically, hearing her cry in pain. This makes me so aroused, I almost cum right there. It feels good knowing she's allowing me to hurt her, and she enjoys it. I bring my hand round to her mouth, where she starts sucking on the finger that was just up her ass.
After a minute, I hear the groans of Jane and Holly masturbating behind me, and Sophia's muffled screams into my hand, so I can't hold it in. Her asshole clenches tight, squeezing on my cock, and causing my jizz to erupt into her ass. "FUCKING HELL THAT FEELS GOOD" Sophia yells.
Once I withdraw, we both stand up and kiss for a bit and when she does a little twirl of her skirt, I notice my cum dripping out of Sophia's tight anus.

"Ooooh," she says, "this feels so dirty and wrong... I love it..."
Then there is a sudden loud noise outside.