Desire & Deception ----by Ashleehttp://spikeluver.com/SpuffyRealm/viewstory.php?sid=5703&warning=NC-17Summary: The immediate attraction that Spike felt for Buffy is so strong, it allows him to ignore all of the complications that are in the way of their relationship. Well...almost all of the complications.
Bent -----------by Brathttp://spikeluver.com/SpuffyRealm/viewstory.php?sid=21452Buffy is a former bad girl on her path to redemption when she meets Spike, who is not yet on his redemptive path, in fact, Spike's got some skeletons in his closet he'd rather Buffy not find out about....and then she does...
Over the Summer ---By: SLAYERFAN
http://www.sinister-attraction.net/stories/s/overthesummer.htm The New Year is going great for Elizabeth until the day of her first class when she walks into the lecture hall with a professor who happens to be a man who Buffy thought she would never see again. Not only has she had an affair but...
WHEN WE DANCE --- by: PEPPERLANDGIRLhttp://www.nocturnal-light.net/fanfiction/story/178/When_We_Dance/allSummary: Spike returns to Sunnydale five years after he left to get his soul. Buffy's with Angel and he has a new love of his own---but some things never change. And oh yeah, the world's ending (again).
Not sure if this fits exactly since its a one shot:
Power Play ---by Vanilla http://www.nocturnal-light.net/fanfiction/story/522/Power_PlaySummary: Buffy has dreamed of her married boss for months, and finally decides to do something about it. Lucky for her, she's not the only one who's been having fantasies.