I'm looking for a fic where Buffy is paying Spike to teach her about sex. It's set sometime after Something Blue. I've read it once and it was on The Spuffy Realm. If you know where I can find it or have it, I would like to hear from you.

Thanks in advance.

Are you talking about Nimbus by Alia? That was a great fic, but had a bit more plot and involved the Initiative. There is a scene where Buffy offers Spike money about s*x. Spike has been into Buffy especially since the events of Something Blue, and he was standing outside the dorm when Riley and Buffy go to Riley's room to have s*x for the first time. It gets awkward and awful and Buffy ends up leaving before they do anything, and runs into Spike. Upset, she goes back to Spike's crypt with him and gets drunk, and comes up with the brilliant idea that he can teach her how to give a blowjob, so she's never so awkard with a guy again. When Spike doesn't immediately say yes, she offers to pay him fifty dollars for the lesson.

Nope, not that one and I'm 100% sure it was on this side. I remember the start being that Buffy is coming to Spike's crypt, and he was sitting on the sarcophagus, smoking when she comes in. I could be wrong but I don't think it was as long as the one you mentioned. And no drinking involved.

Is it School of Seduction by ya-lublyu-tebya? Not sure if it's on this site, but definately on fan fic net

Not the one but close. Buffy seemed a bit shy in the start. It started with Buffy coming to Spike asking for help and offering to pay him. Spike think that he would do it without payment. I'm remembering more and more.

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That fic has taken down by the autor, it's a shame

It the story was AU (human) it could have been Love Me by slaymuch
(Buffy was dumped by her boyfriend, Angel, for being an inadequate girlfriend in bed. Desperate to get him back, Buffy asks her best friend Spike to tutor her in the ways of lust. Will their friendship remain the same as the bleached blonde teaches Buffy how to please a man in bed? )

I'm not sure if there is another one I've read, could be.
Is that the one you were looking for?

Because by HollyDB (Summary: Buffy and Spike have been best friends since kindergarten; they've been through the best and worst of times, which makes it obvious to Buffy that Spike ought to be the one to whom she loses her virginity.) was taken down. You'd have to contact her directly because she said so.
But I think it's the first one.

Could it be madrog's WIP Just a Fling?

http://dark-solace.org/elysian/viewstory.php?sid=1194&warning=NC-17

It was complete.

I think this could be it.
Overcome by Flibble
http://spikeluver.com/SpuffyRealm/viewstory.php?sid=12648

Summary: An unsatisfied Buffy comes across Spike while patrolling. This story is set in Season 4. Buffy and Riley are a couple but Spike is pre-chip.

Sorry, not the right one.