Katie and I have been having slumber parties since we were 19, and they’re every bit as tawdry as our boy-friends think… not that we’d ever tell them.

Though, if they read this letter, I guess they’ll find out.

It started when we met during our sophomore year of college. We had a women’s studies class together — go figure — yet neither one of us had many female friends. We developed an easy friendship, and when we ended up sharing a hotel room on a class trip, we grew even closer. I mean, really close. We kissed for the first time that night, and by the end of the trip, we were sharing a bed.

We fooled around a lot that first weekend, but it wasn’t until we got back to school and the privacy of my apartment that we had sex. Though we both identified as bisexual, I’d never fucked another girl before, and Katie had only been with one other woman. It felt like we were losing our virginity all over again — and it was so much fun! There was something about having sex with my best friend that was incredibly appealing.

In the past five years, we’ve gone through plenty of boyfriends and girl-friends between us, but our relationship has stayed the same — we’re still best friends who have amazingly hot sex. Take last weekend, for example. Our current boyfriends, who happen to be good friends themselves, wanted to take a long weekend to go snowboarding, but I had to work. Katie decided to stay behind with me. I slogged through work for a couple of days, but when the weekend finally arrived, Katie suggested we have an old-fashioned slumber party.

When Katie came over, she had on goofy-looking footy pajamas, and she was carrying her sleeping bag and a tote full of snacks and DVDs. If anyone had seen her, they’d have thought it was just girls being girls. But I knew that buried under the rom-coms and marshmallows there’d be a handful of X-rated movies.

We watched one of the comedies first, but by the time the end credits rolled, we were ready for something more adult. I plucked one of the porn DVDs out of Katie’s bag and popped it in while she unfurled her sleeping bag on the floor, giving us room to play. When the movie started, we sat next to each other on the sleeping bag and watched the opening scene. I found myself gently rubbing Katie’s neck while she caressed my thigh. We were still fully clothed, though, and that had to change.

We turned toward each other to share a kiss, and began working our way under each other’s pajamas. I unzipped the front of Katie’s outfit and pushed my hands under the sides to stroke her skin, and she unbuttoned my top and pushed it off my shoulders so she could fondle my breasts. As we undressed each other, our kisses trailed down necks and shoulders, across collarbones and down stomachs, and we suckled breasts and dipped our tongues into belly buttons.

Finally, just as the couple in the movie was really getting down to business, we arranged ourselves in a sixty-nine. I was on top, and as I leaned forward to lick Katie’s moist cunt, I pushed my own slit down on her mouth. Her tongue thrust into me instantly, and while her mouth worked on my pussy, her hands kneaded my ass cheeks. Eventually, one finger found its way to my tight rear channel and wiggled its way inside. Now, that felt good!

While Katie fucked me with her tongue and fingered my ass, I was finger-fucking her pussy and tracing patterns on her erect clit with my tongue. Katie was gasping and moaning against my cunt as she worked on me, just as I was.

I felt myself falling apart and I rode the waves of passion, coming hard and letting my juices pour over my friend’s tongue. She didn’t stop once I came, though. She kept going, working a second finger into my ass and sucking hard on my clit so she could bring me to another mind-blowing climax. I didn’t stop, either. I thrust four fingers into her pussy and fucked her as hard as I could while working my tongue over her clit.

After Katie’s first orgasm, we went at it for as long as we could, bringing each other to the brink of climax and then pulling back, and then doing it all over again. Finally, we were both desperate to come, and we came together. It was wild!

We stopped the movie and took a break to have some snacks — though we obviously preferred to snack on each other. Then, after watching another cheesy romance, we went back to our X-rated DVD for round two. Before the night was over, we had finished the movie and fucked each other to four more orgasms.

The guys got home the next afternoon, and after showing us videos of their best runs, they asked how our weekend was. “Oh, fine,” we told them. After all, there was no need to make them jealous with tales of our amazing weekend.

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