I read a fic recently that was about after months of being left unsatisfied by Riley, Buffy jumps Spike and has her way with him. Does anyone know any fics like this? the one i read was great and im looking for more like that.

maryperk has done a couple of stories in that time frame check them out

Nothing to Fear by Icemink.

...Set between seasons 4 and 5. After Buffy is exposed to the poison of a demon, Riley and Buffy fight when he refuses to "take advantage" of her. Spike however has no such compunction.

Very NC17

Awesome thank u guys